The API exposed for navigation changed in Auto SDK 2.1, and the current code in the agl-service-voice-high-capabilities binding no longer works, and the ability to demonstrate integration with e.g. the demo navigation app is broken.  Updates to at least agl-service-voice-high-capabilities are required, and potentially to downstream users like agl-service-navigation if the vshl-capabilities binding interface is updated.  The other area that potentially needs remediation is climate control, it's currently not obvious if vshl-capabilities will work with post-2.0 Auto SDK changes to that API.  The current intent is to look into these issues after the initial Koi release.