Apple today seeded the second preview version of OS X Mountain Lion to developers, building upon the initial developer version released one month ago.
As noted by The Next Web, Apple has also posted an extensive list of known issues alerting developers to various bugs and missing features that have yet to be addressed.
OS X Mountain Lion is Apple's next major operating system version and is scheduled for release in "late summer". The release will offer greater integration with iCloud, as well as a number of new feature including some drawn from iOS.
Article Link: OS X 10.8 Mountain Lion Developer Preview 2 Seeded to Developers