When you install the universal installer from http://www.qa.jboss.com/binaries/RHDS/builds/development/5.0.0.CR1.installer/ on a Mac and start JBDS, the app will have name of "jbdevstudio" instead of JBoss Developer Studio. This is because after installation, "studio/JBoss Developer Studio.app/Contents/Info.plist" contains:
<key>CFBundleName</key> <string>jbdevstudio</string>
This should be changed to JBoss Developer Studio.
Not sure if we'll be using the new Tycho built installers already for 5.0.0 or not. If so, we should fix this before the release.
This problem occurred in the past and it's an easy fix.