We are always looking for beta testers to help quality control and bug hunt prerelease versions or new Catznip features.
Beta testing is typically done with project viewers that contain a limited feature set over and above the stock Linden Lab default. Beta viewers are typically broken, crash prone and slow. This is NOT the place to come looking for the latest feature complete version of the viewer. That would be our Latest Release.
Becoming a Beta Tester
Currently beta testers are by application and invite only.