diff --git a/README.md b/README.md
index 0584a1a..1534387 100644
--- a/README.md
+++ b/README.md
@@ -20,9 +20,11 @@
 
 ## Environment
 
-- VS 2019
-- C++ 17
-- CMake 16.3 +
+- Compiler
+  - MSVC: >=1926
+  - GCC: >= 10
+  - Clang: >= 10
+- C++ 20
 
 ## Documentation
 
diff --git a/doc/changelog.md b/doc/changelog.md
index 8e08c2c..6b16ea4 100644
--- a/doc/changelog.md
+++ b/doc/changelog.md
@@ -1,7 +1,12 @@
 # Change Log
 
+- 0.15.0
+  - use C++20: `span`, `concept`, ...
+  - `CmptType` -> `TypeID`, `CmptAccessType` -> `AccessTypeID` 
+  - support pch
+  - support Clang, GCC, MSVC
 - 0.14.4
-  - EntityMngr add single `CmptType` API
+  - `EntityMngr` add single `CmptType` API
   - Add some template API for `SystemTraits` and `SystemMngr` 
   - `static_assert(std::is_copy_constructible_v<Cmpt>)` to `std::is_copy_constructible_v<Cmpt> || std::is_constructible_v<Cmpt, Cmpt&>` 
 - 0.14.3
diff --git a/doc/todo.md b/doc/todo.md
index 7762b92..a72a15b 100644
--- a/doc/todo.md
+++ b/doc/todo.md
@@ -28,9 +28,9 @@
 - [x] serialize (`IListner`)
 - [x] system base -> `System` 
 - [x] singleton
-- [ ] doxygen
 - [x] random access
 - [x] system traits
+- [ ] change filter
 
 ### maybe support in future
 
@@ -41,6 +41,8 @@
 - [x] world run system func directly
 - [x] `CmptsView` = `const EntityLocator* locator + void** cmpts` 
 - [ ] pmr
+  - [x] pool
+  - [ ] API
 - [ ] batch create/instantiate (need benchmark)
 
 ### maybe not support in future
@@ -53,7 +55,7 @@
 - [x] SysFuncGraph dump
 - [x] doc
 
-## detial
+## detials
 
 - [x] remove `EntityMngr::ai2ei` 
 - [x] Archetype share `Pool<Chunk>`