Apple notified registered OS X developers that an update for the OS X Lion 10.7 Preview 2 was available on Friday.
This update is available for those, who have previously installed Preview 2. Required with the new update is the new Xcode 4.1. Which can be obtained from the Mac Dev Center.
From systems that have developer preview 2 of Lion or Lion Server installed, run Software Update and download Mac OS X Lion Developer Preview 2 Update. You must also download Xcode 4.1 Developer Preview 3 available from the Mac Dev Center to build apps with this version of Lion.
If you have not yet downloaded developer preview 2 of Lion and Lion Server, get your redemption code from the Mac Dev Center then proceed to the Mac App Store to redeem your code and download Lion.
The previous build (Lion Developers Build 2) was released in late march. That particular build was released with multiple issues, such as problems with the Thunderbolt port, and playback of videos purchased from the iTunes Store.
Apple will showcase features of Lion at WWDC, which is to be held June 6 through June 10, in San Fransisco, CA. Where Apple promised to “unveil the future of iOS and Mac OS.”