Apple's yearly developer conference should see iOS 8, OS X 10.10, and likely some hardware.
Mac OS X 10.6.8 to Remove MacDefender, Get Mac App Store Ready for Lion
Apple seeded developers with Mac OS X 10.6.8 (10K531) on Friday. As first noted by fscklog.com, the 10.6.8 update will offer a number of interesting enhancements.
First, Apple will use the 10.6.8 to identify and remove known variants of the Mac Defender malware. Apple released a support document last week detailing the Mac Defender malware and promising a software update to remove it. It appears 10.6.8 will be the update that accomplishes it.
Next, Apple is said to be "enhancing the Mac App Store" to get your Mac ready to upgrade to Mac OS X Lion. Lion is believed to be offered to customers via the Mac App Store. It is presently distributed to developers via Mac App Store downloads, so it's no stretch of the imagination that Apple will also be offering it to customers in the same way. Apple is expected to provide more details about Mac OS X Lion at the annual Worldwide Developer's Conference which kicks off on June 6th.