diff --git a/sdk/ai/azure-ai-projects/CHANGELOG.md b/sdk/ai/azure-ai-projects/CHANGELOG.md
index ccc12ed76e39..735c1f3a3a14 100644
--- a/sdk/ai/azure-ai-projects/CHANGELOG.md
+++ b/sdk/ai/azure-ai-projects/CHANGELOG.md
@@ -1,6 +1,8 @@
 # Release History
 
-## 2.0.0b4 (Unreleased)
+## 2.0.0b4 (2026-02-24)
+
+This is the first release that uses the Generally Available (GA) version "v1" of the Foundry REST APIs.
 
 ### Features Added
 
@@ -9,12 +11,16 @@
 
 ### Breaking changes
 
+* A Responses call on OpenAPI client (`openai_client.responses.create()`) that uses an Agent reference, now needs to specify
+`extra_body={"agent_reference": {"name": agent_name, "type": "agent_reference"}}` instead of `extra_body={"agent": {"name": agent_name, "type": "agent_reference"}}`.
+* Agent methods `.agents.create()`, `.agents.create_from_manifest()`, `.agents.update()` and `.agents.update_from_manifest()` were removed. Use
+the remaining methods `.agents.create_version()` and `.agents.create_version_from_manifest()` instead.
 * To align with OpenAI naming conventions, use "Tool" suffix for class names describing Azure tools that are generally available (stable release):
   * Rename class `AzureAISearchAgentTool` to `AzureAISearchTool`.
   * Rename class `AzureFunctionAgentTool` to `AzureFunctionTool`.
   * Rename class `BingGroundingAgentTool` to `BingGroundingTool`.
-  * Rename class `OpenApiAgentTool` to OpenApiTool`.
-* To align with OpenAI naming conventions, use "PreviewTool" suffix for class names descirbing Azure tools in preview:
+  * Rename class `OpenApiAgentTool` to `OpenApiTool`.
+* To align with OpenAI naming conventions, use "PreviewTool" suffix for class names describing Azure tools in preview:
   * Rename class `A2ATool` to `A2APreviewTool`.
   * Rename class `BingCustomSearchAgentTool` to `BingCustomSearchPreviewTool`.
   * Rename class `BrowserAutomationAgentTool` to `BrowserAutomationPreviewTool`.
@@ -22,16 +28,37 @@
   * Rename class `MicrosoftFabricAgentTool` to `MicrosoftFabricPreviewTool`.
   * Rename class `SharepointAgentTool` to `SharepointPreviewTool`.
 * Other class renames:
-  * Rename class `ItemParam` to `InputItem`.
   * Rename class `PromptAgentDefinitionText` to `PromptAgentDefinitionTextOptions`
   * Rename class `EvaluationComparisonRequest` to `InsightRequest`
-* Tracing: workflow actions in conversation item listings are now emitted as "gen_ai.conversation.item" events (with role="workflow") instead of "gen_ai.workflow.action" events in the list_conversation_items span.
-* Tracing: response generation span names changed from "responses {model_name}" to "chat {model_name}" for model calls and from "responses {agent_name}" to "invoke_agent {agent_name}" for agent calls.
-* Tracing: response generation operation names changed from "responses" to "chat" for model calls and from "responses" to "invoke_agent" for agent calls.
-* Tracing: response generation uses gen_ai.input.messages and gen_ai.output.messages attributes directly under the span instead of events.
-* Tracing: agent creation uses gen_ai.system_instructions attribute directly under the span instead of an event. Note that the attribute name is gen_ai.system_instructions not gen_ai.system.instructions.
+* To use Workflow Agents, which are still in preview, you now need to set an additional input
+argument `foundry_features=FoundryFeaturesOptInKeys.WORKFLOW_AGENTS_V1_PREVIEW` when calling
+`.agents.create_version()`.
+* To use Hosted Agents, which are still in preview, you now need to set an additional input
+argument `foundry_features=FoundryFeaturesOptInKeys.HOSTED_AGENTS_V1_PREVIEW` when calling
+`.agents.create_version()`.
+* To use `.evaluation_rules.create_or_update()` with `HumanEvaluationPreviewRuleAction`, you now
+need to set an additional input argument `foundry_features=FoundryFeaturesOptInKeys.EVALUATIONS_V1_PREVIEW`.
+* Operation sets that are still in preview now have the ".beta" subclient in their call path. So for example
+`project_client.memory_stores.create()` has changed to `project_client.beta.memory_stores.create()`.
+Similarly for the operation sets: `evaluators`, `insights`, `evaluation_taxonomies`, `schedules` and `red_teams`.
+* The method `begin_update_memories()` in Memory Stores operation now accept optional `items` of type `List[dict[str, Any]]`
+instead of `List[ItemParam]`. Similarly for `items` in method `search_memories()`. As a result around 100 classes
+that are derived from `ItemParam` were removed as they are no longer used by the client library.
+* Tracing instrumentation, is an experimental preview feature, now requires explicitly opt in by setting the environment variable:
+`AZURE_EXPERIMENTAL_ENABLE_GENAI_TRACING=true`
+* Tracing: workflow actions in conversation item listings are now emitted as "gen_ai.conversation.item" events
+(with role="workflow") instead of "gen_ai.workflow.action" events in the list_conversation_items span.
+* Tracing: response generation span names changed from "responses {model_name}" to "chat {model_name}" for model
+calls and from "responses {agent_name}" to "invoke_agent {agent_name}" for agent calls.
+* Tracing: response generation operation names changed from "responses" to "chat" for model calls and from "responses"
+to "invoke_agent" for agent calls.
+* Tracing: response generation uses gen_ai.input.messages and gen_ai.output.messages attributes directly under the
+span instead of events.
+* Tracing: agent creation uses gen_ai.system_instructions attribute directly under the span instead of an event.
+Note that the attribute name is gen_ai.system_instructions not gen_ai.system.instructions.
 * Tracing: "gen_ai.provider.name" attribute value changed to "microsoft.foundry".
-* Tracing: the format of the function tool call related traces in input and output messages changed to {"type": "tool_call", "id": "...", "name": "...", "arguments": {...}} and {"type": "tool_call_response", "id": "...", "result": "..."}
+* Tracing: the format of the function tool call related traces in input and output messages changed to
+{"type": "tool_call", "id": "...", "name": "...", "arguments": {...}} and {"type": "tool_call_response", "id": "...", "result": "..."}
 
 ### Sample updates