Developer Preview-Software Update-Mountain Lion-Mac App Store-Apple

Apple Issues Software Update to Mountain Lion Developer Preview 4

Apple has issued a software update via the Mac App Store to Mountain Lion Developer Preview 4, originally released last week.
This update is the second time Apple has updated the Mountain Lion Developer Preview via the Mac App Store rather than releasing an entirely new DP -- Apple issued a similar update in May.
Apple did not specify changes in the update, saying only that it "is recommended for all users running OS X Mountain Lion Developer Preview 4. With Mountain Lion's final release expected next month, Apple should be moving towards a final build soon.
Among other things, the update adds support for more Facebook notifications and PowerNap support for supported machines. It weighs in at 1.08GB and has a build number of 12A248, up from 12A239 previously. read more..

source:http://bit.ly/Maro8u