In the Icehouse release which version of Compute API document is the baseline? Is it version 2.0 or is there a minor release, e.g., 2.1 or 2.2.

As a newcomer to OpenStack when I look at the Icehoue release notes I can't tell exactly what version (major.minor) of the API is supported. It seems mostly 2.0, but from researching Identiy v3 I found a 3.2, 3.3 and 3.4 that is not referenced from the documentation page for Icehouse.