You missed a couple:
ezyui: http://svn.projects.ez.no/ezyui/trunk/ezyui/classes/ezyuiajaxcontent.php ezflow: http://svn.ez.no/svn/extensions/ezflow/trunk/packages/ezflow_extension/ezextension/ezflow/classes/ezflowajaxcontent.php
As for the roadmap, there are plans to include ezyui in either 4.2 or 4.3.
The reason why I'm uncertain is: extensions are supposed to have releases in between the eZ Publish releases according to the new heartbeat release model, and yui 3.0 won't be final before q4 or q1 2010. So it might not show up in 4.2, or it will show up in 4.2 as early preview version (as in not a stable api yet) using yui 2.7.0 for the time being.
