Microsoft is working on internal beta version of Windows 7, but Windows 7 Build 7022 (Build 7022.winmain.090115-1850) was leaked to web yesterday, and is confirmed to be real. It was created on Jan 15th, a little bit later than the release of Windows 7 Beta 1 build 7000 Edition on Jan 8th.
According to win7, build 7034 (Build 7034.winmain.090202-1920) was announced on Feb 2nd, but only for Microsoft employees.
Windows 7 RC is scheduled in April. Hopefully the final edition of Windows 7 will be available within this year.