According to a posting on Microsoft's Swedish partner blog we could be seeing the Windows 7 release candidate in early April.
The blog also hints at a RTM and business launch of Q3 2009. According to the blog Michael Bohlin, a Windows product manager, was questioned over Windows 7 availability. The blogger also states "the cut of all internal guesses here in the office right now is October 3 at 11.10" for the RTM date. Windows chief Steven Sinofsky posted a blog entry today to put to rest any rumours of a beta 2 for Windows 7 and confirm the next release will be the near final release candidate.
Microsoft is currently rumoured to be readying an interim build for Windows 7 testers for next month.