diff --git a/CHANGELOG.md b/CHANGELOG.md
index 421e0ff8..4d255428 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,9 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [Unreleased]
+
+
+## [0.5-pre2 - 2019-02-06]
 ### Added
 - a simple regression test script test/make-test.sh to compile all examples
 
diff --git a/board-manager/Makefile b/board-manager/Makefile
index f62db2f9..f5d8b56b 100644
--- a/board-manager/Makefile
+++ b/board-manager/Makefile
@@ -1,7 +1,7 @@
 # the required versions for the new build
-COREVERSION=0.4.0
+COREVERSION=0.5-pre2
 SDCCVERSION=10738
-TOOLSVERSION=2018.12.07
+TOOLSVERSION=2019.02.05
 
 # default the tool version to be the current date as YYYY.MM.DD
 #TOOLSVERSION?=$(shell date '+%Y.%m.%d')
diff --git a/board-manager/parts/platform-entry-sduino-0.5-pre2.txt b/board-manager/parts/platform-entry-sduino-0.5-pre2.txt
new file mode 100644
index 00000000..1feacda7
--- /dev/null
+++ b/board-manager/parts/platform-entry-sduino-0.5-pre2.txt
@@ -0,0 +1,29 @@
+                {
+                    "name": "Sduino STM8 plain C core (non-C++)",
+                    "architecture": "stm8",
+                    "version": "0.5-pre2",
+                    "category": "Contributed",
+                    "boards": [
+                        {"name": "STM8S103F3 Breakout Board"},
+                        {"name": "STM8S105C6 Discovery Board"},
+                        {"name": "STM8S105K4T6 Breakout Board"},
+                        {"name": "sduino UNO (STM8S105K6)"},
+                        {"name": "sduino MB (STM8S208MBT6B)"}
+                    ],
+                    "toolsDependencies": [
+                        {
+                            "name": "STM8Tools",
+                            "version": "2019.02.05",
+                            "packager": "sduino"
+                        },
+                        {
+                            "name": "sdcc",
+                            "version": "build.10738",
+                            "packager": "sduino"
+                        }
+                    ],
+                    "url": "https://github.com/tenbaht/sduino/releases/download/v0.5-pre2/sduino-core-0.5-pre2.tar.bz2",
+                    "archiveFileName": "sduino-core-0.5-pre2.tar.bz2",
+                    "checksum": "SHA-256:13f039942368fdc2fea5470c2d3d58d9fb377cc7ca9502b1177f11ae8c75a7d8",
+                    "size": "2263319"
+                },
diff --git a/board-manager/parts/tools-entry-sduino-tools-2019.02.05.txt b/board-manager/parts/tools-entry-sduino-tools-2019.02.05.txt
new file mode 100644
index 00000000..842c85ac
--- /dev/null
+++ b/board-manager/parts/tools-entry-sduino-tools-2019.02.05.txt
@@ -0,0 +1,31 @@
+                {
+                    "name": "STM8Tools",
+                    "version": "2019.02.05",
+                    "systems": [
+                        {
+                            "host": "i686-pc-linux-gnu",
+                            "url": "https://github.com/tenbaht/sduino/releases/download/v0.5-pre2/sduino-tools_linux32-2019.02.05.tar.bz2",
+                            "archiveFileName": "sduino-tools_linux32-2019.02.05.tar.bz2",
+                            "checksum": "SHA-256:86c816ce31fc37d8437ac9a1eb88f0c58444b9abbb9bc16934f0977dec474cc3",
+                            "size": "49540"
+                        },{
+                            "host": "x86_64-pc-linux-gnu",
+                            "url": "https://github.com/tenbaht/sduino/releases/download/v0.5-pre2/sduino-tools_linux64-2019.02.05.tar.bz2",
+                            "archiveFileName": "sduino-tools_linux64-2019.02.05.tar.bz2",
+                            "checksum": "SHA-256:e417e67551c6d34b6f9a8b8635eb1eb69342fd021b2962e52e495b2dd333d6c7",
+                            "size": "49362"
+                        },{
+                            "host": "x86_64-apple-darwin",
+                            "url": "https://github.com/tenbaht/sduino/releases/download/v0.5-pre2/sduino-tools_macosx-2019.02.05.tar.bz2",
+                            "archiveFileName": "sduino-tools_macosx-2019.02.05.tar.bz2",
+                            "checksum": "SHA-256:5711e486ff060f1a3941a49884bec061110ec33f4865afb1359bfd9e15280766",
+                            "size": "52357"
+                        },{
+                            "host": "i686-mingw32",
+                            "url": "https://github.com/tenbaht/sduino/releases/download/v0.5-pre2/sduino-tools_mingw32-2019.02.05.tar.bz2",
+                            "archiveFileName": "sduino-tools_mingw32-2019.02.05.tar.bz2",
+                            "checksum": "SHA-256:35d76fb968ac7998ec798502be597d7b234ceddb5c2bcb439d8f24711bd34064",
+                            "size": "418464"
+                        }
+                    ]
+                },
diff --git a/package_sduino_stm8_index.json b/package_sduino_stm8_index.json
index a126e442..1a88c338 100644
--- a/package_sduino_stm8_index.json
+++ b/package_sduino_stm8_index.json
@@ -9,6 +9,35 @@
                 "online": "http://www.stm32duino.com/viewforum.php?f=52"
             },
             "platforms" : [
+                {
+                    "name": "Sduino STM8 plain C core (non-C++)",
+                    "architecture": "stm8",
+                    "version": "0.5-pre2",
+                    "category": "Contributed",
+                    "boards": [
+                        {"name": "STM8S103F3 Breakout Board"},
+                        {"name": "STM8S105C6 Discovery Board"},
+                        {"name": "STM8S105K4T6 Breakout Board"},
+                        {"name": "sduino UNO (STM8S105K6)"},
+                        {"name": "sduino MB (STM8S208MBT6B)"}
+                    ],
+                    "toolsDependencies": [
+                        {
+                            "name": "STM8Tools",
+                            "version": "2019.02.05",
+                            "packager": "sduino"
+                        },
+                        {
+                            "name": "sdcc",
+                            "version": "build.10738",
+                            "packager": "sduino"
+                        }
+                    ],
+                    "url": "https://github.com/tenbaht/sduino/releases/download/v0.5-pre2/sduino-core-0.5-pre2.tar.bz2",
+                    "archiveFileName": "sduino-core-0.5-pre2.tar.bz2",
+                    "checksum": "SHA-256:13f039942368fdc2fea5470c2d3d58d9fb377cc7ca9502b1177f11ae8c75a7d8",
+                    "size": "2263319"
+                },
                 {
                     "name": "Sduino STM8 plain C core (non-C++)",
                     "architecture": "stm8",
@@ -144,6 +173,68 @@
                 }
             ],
             "tools" : [
+                {
+                    "name": "STM8Tools",
+                    "version": "2019.02.05",
+                    "systems": [
+                        {
+                            "host": "i686-pc-linux-gnu",
+                            "url": "https://github.com/tenbaht/sduino/releases/download/v0.5-pre2/sduino-tools_linux32-2019.02.05.tar.bz2",
+                            "archiveFileName": "sduino-tools_linux32-2019.02.05.tar.bz2",
+                            "checksum": "SHA-256:86c816ce31fc37d8437ac9a1eb88f0c58444b9abbb9bc16934f0977dec474cc3",
+                            "size": "49540"
+                        },{
+                            "host": "x86_64-pc-linux-gnu",
+                            "url": "https://github.com/tenbaht/sduino/releases/download/v0.5-pre2/sduino-tools_linux64-2019.02.05.tar.bz2",
+                            "archiveFileName": "sduino-tools_linux64-2019.02.05.tar.bz2",
+                            "checksum": "SHA-256:e417e67551c6d34b6f9a8b8635eb1eb69342fd021b2962e52e495b2dd333d6c7",
+                            "size": "49362"
+                        },{
+                            "host": "x86_64-apple-darwin",
+                            "url": "https://github.com/tenbaht/sduino/releases/download/v0.5-pre2/sduino-tools_macosx-2019.02.05.tar.bz2",
+                            "archiveFileName": "sduino-tools_macosx-2019.02.05.tar.bz2",
+                            "checksum": "SHA-256:5711e486ff060f1a3941a49884bec061110ec33f4865afb1359bfd9e15280766",
+                            "size": "52357"
+                        },{
+                            "host": "i686-mingw32",
+                            "url": "https://github.com/tenbaht/sduino/releases/download/v0.5-pre2/sduino-tools_mingw32-2019.02.05.tar.bz2",
+                            "archiveFileName": "sduino-tools_mingw32-2019.02.05.tar.bz2",
+                            "checksum": "SHA-256:35d76fb968ac7998ec798502be597d7b234ceddb5c2bcb439d8f24711bd34064",
+                            "size": "418464"
+                        }
+                    ]
+                },
+                {
+                    "name": "STM8Tools",
+                    "version": "2019.01.15",
+                    "systems": [
+                        {
+                            "host": "i686-pc-linux-gnu",
+                            "url": "https://github.com/tenbaht/sduino/releases/download/v0.5.0-pre1/sduino-tools_linux32-2019.01.15.tar.bz2",
+                            "archiveFileName": "sduino-tools_linux32-2019.01.15.tar.bz2",
+                            "checksum": "SHA-256:25a652b1319ff711c2c47af065aa2786a38b71151e0b3e839a81d1084509afaf",
+                            "size": "45038"
+                        },{
+                            "host": "x86_64-pc-linux-gnu",
+                            "url": "https://github.com/tenbaht/sduino/releases/download/v0.5.0-pre1/sduino-tools_linux64-2019.01.15.tar.bz2",
+                            "archiveFileName": "sduino-tools_linux64-2019.01.15.tar.bz2",
+                            "checksum": "SHA-256:12917e22acccc882a2b777e7883163c1938da3e21f68433dd1f9157f865950cf",
+                            "size": "45664"
+                        },{
+                            "host": "x86_64-apple-darwin",
+                            "url": "https://github.com/tenbaht/sduino/releases/download/v0.5.0-pre1/sduino-tools_macosx-2019.01.15.tar.bz2",
+                            "archiveFileName": "sduino-tools_macosx-2019.01.15.tar.bz2",
+                            "checksum": "SHA-256:786267e3ee2aea3b4b50a00bfdc49244727e95f1f05a44b135139744ffe24a5e",
+                            "size": "48036"
+                        },{
+                            "host": "i686-mingw32",
+                            "url": "https://github.com/tenbaht/sduino/releases/download/v0.5.0-pre1/sduino-tools_mingw32-2019.01.15.tar.bz2",
+                            "archiveFileName": "sduino-tools_mingw32-2019.01.15.tar.bz2",
+                            "checksum": "SHA-256:36979e642e75ecf6ea26e4a15e263ddb4ee9b1b4eaec4756514c6062bdface6a",
+                            "size": "414118"
+                        }
+                    ]
+                },
                 {
                     "name": "STM8Tools",
                     "version": "2018.12.07",