The second beta for Fedora Core 6 (FC6-Test2) is available for testers and users alike. While FC6-Test1 was made available last June, there was not a significant set of improvements over the FC5 release.
The notable issues in FC6-Test2 are:
All packages recompiled (minus Thunderbird)
Introduction of DT_GU_HASH, a far more efficient symbol lookup table for dynamic linking. […]