Update changelog for 1.2.9, 1.2.10, and 1.2.11 (#198)

1.2.9, 1.2.10, and 1.2.11

---------

Co-authored-by: Dirk Brand <[email protected]>

Author: Ayush0054

changelog/overview.mdx

@@ -3,6 +3,28 @@ title: "Product updates"
 mode: "wide"
 ---
 
+<Update label="2025-04-07" description="v1.2.11">
+## Bug Fixes:
+
+- **Fix for structured outputs**: Fixed cases of structured outputs for reasoning.
+</Update>
+
+<Update label="2025-04-07" description="v1.2.10">
+## 1.2.10
+
+## New Features:
+
+- **Knowledge Tools**: Added `KnowledgeTools` for thinking, searching and analysing documents in a knowledge base.
+</Update>
+
+<Update label="2025-04-05" description="v1.2.9">
+## 1.2.9
+
+## Improvements:
+
+- **Simpler MCP Interface**: Added `MultiMCPTools` to support multiple server connections and simplified the interface to allow `command` to be passed. See [these examples](https://github.com/agno-agi/agno/blob/382667097c31fbb9f08783431dcac5eccd64b84a/cookbook/tools/mcp) of how to use it.
+</Update>
+
 <Update label="2025-04-04" description="v1.2.8">
 ## 1.2.8