readme.txt file still contain an information from beta release. (\jbdevstudio\readme.txt )
For example :
The following issues have been identified to affect this beta release: (beta should be renamed to CR2 I think. But maybe I'm wrong)
JBIDE-1129: TestNG execution for Seam 2 EAR projects will fail due to
an issue with the microcontainer bundled with Seam
2.0.0.GA. Seam 1.2 and Seam 2.0.1 projects are not affected.
(http://jira.jboss.org/jira/browse/JBIDE-1129)
(Now it's fixed)
JBIDE-2700: If you start a server without having started the Debug perspective or viewed/edited a launch configuration
the console view for a server will just show a blank page. Workaround is to switch to the debug perspective at least once;
then the console view will show up.
(https://jira.jboss.org/jira/browse/JBIDE-2700) - fixed too.

Whole readme.txt attached.