updated 05:45 pm EDT, Fri March 16, 2012
OS X Mountain Lion Developer Preview 2 arrives
Apple finished the week with a post to its developer page for Mountain Lion Developer Preview 2. Build 12A154Q is primarily meant to address earlier flaws and doesn't specifically outline what's new or fixed. The build is clearly unfinished, however, and is currently missing 32-bit kernel extension support, a large number of Game Center features, limited Notes support, and issues with NVIDIA graphics drivers, DVD Player, and limited Recovery Partition features.
The release also warned developers that the current Apple TV firmware doesn't support AirPlay mirroring through Mountain Lion.
A finished version of Mountain Lion is due in late summer and will likely see more major developer preview releases as well as internal betas. Seeing a large number of outstanding flaws at this stage is considered normal and just shows that it's still some distance away from being ready for mainstream use.