Roadmap update (#108)

Closes #107

docs/docs/roadmap.md

@@ -6,25 +6,39 @@ and [project boards](https://github.com/bakdata/quick/projects).
 
 ## Upcoming releases
 
-### 0.8
+### 0.9
 
-Development: Q3 2022
+Development: Q4 2022
 
-* Improved gateway performance: Pre-computation of a key's location
-* Kafka 3.0 support
+* Providing DateTime support
+* Extending range queries by giving users a possibility to
+make a range over the value field 
 
 ### Further ideas
 
-* Kafka-Streams library for custom REST APIs in Quick
-* More complex query arguments, like ranges and filters
-* Support for custom authorization
-* Support different ingress controllers like nginx
+* A possibility to deploy a mirror without creating a topic
+* Further extension of range queries (range exclusively on keys, range using DateTime)
+* Extending `Mutation` possibilities, for example, to ingest an array of values
+* Providing a `between` semantics for having a range open on two fields
+* Simplifying the `@topic` directive
+* Redefining topic semantics
+* Improving Gateway Performance (using JSON instead of generic types)
+* Supporting additional query arguments (for example, filters)
+* Supporting custom authorization
+* Supporting different ingress controllers like nginx
+* Implementing a Kafka-Streams library for custom REST APIs in Quick
 
 
 ## Completed releases
 
 The [changelog](../changelog) has a detailed list of releases.
 
+### 0.8
+
+* Range queries support
+* Improved gateway performance: Pre-computation of a key's location
+* Kafka 3.0 support
+
 ### 0.7
 
 * Protobuf support