The official source reports this update: v2.9.0. 2.9.0 (2026-09-10) Highlights This release focuses on agent resilience and ecosystem integration by introducing automatic model failover, native voice support via LiveKit, and compatibility with MCP SDK 2.x. Models : Safeguard agent uptime by automatically failing over to backup models when the primary model encounters errors. ( c300b8d ) Integrations : Build rich voice and telephony agents using the newly added LiveKit runner. ( f277d91 ) Workflows : Simplify graph workflow management by authoring and loading ADK 2.0 graphs directly from declarative YAML configurations.
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Automatic model failover added in v2.9.0
Version 2.9.0 adds automatic model failover for agent resilience. It also includes native voice support via LiveKit.
11 Sept 20261 verified claims1 sources2 observations
This official update documents a development concerning v2.9.0. Its practical significance depends on the scope and evidence stated by the source.
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