If you're an Apple developer, you can now download the a second developer preview release of OS X 10.7 (Lion). TechCrunch believes it's pretty close to the finished version of the operating system.
Aside from sweeping bug and stability fixes, Developer Preview 2 will install on 2011 MacBook Pros and apparently has an updated version of iCal. MacRumors Forums has a running thread of the latest discoveries regarding the release. [TechCrunch and MacRumors]