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Various illegal third-party sources, including torrent trackers, are offering both the 32-bit and 64-bit versions of the operating system for download. Initially, the x86 flavor was the only one that made it out of Redmond, but x64 soon followed, with the bits up for grabs for any user with a BitTorrent client.

And yes, in case you were wondering if the Betta fish wallpaper is still the first visual contact users will have with Windows 7 Build 7077 following installation, although it will be quite a stretch for Microsoft to come up with a new visual concept to illustrate the Release Candidate stage. Release Candidate, just as the Beta, the first and only of its kind for Windows 7, is the next major development milestone. Leaked builds such as 7022, 7048, 7057, 7068 and, now, 7077 have offered end-users a test of the evolution of Windows 7 from Beta to RC.

In this context, the most notable changes occurred between builds 7022 and 7048. With Build 7077, Microsoft has reportedly reached the RC-Escrow stage. This means that the code for the platform is essentially frozen. The RC-Escrow is provided to testers in order to confirm that the reported bugs have been fixed, and to comb the OS for any regression issues that might have been introduced within the evolution from Beta Build 7000.

And, in this regard, while users of Windows 7 Build 7000 that will play around will Build 7077 are bound to notice a consistent array of changes, those that have test-driven Build 7068, for example, will see almost nothing new. The limited volume of modifications is a clear indication that the Redmond company is now focusing on the under-the-hood evolution of Windows 7, with the fully fledged RC build just around the corner. The software giant is reportedly working to offer Windows 7 Build 7077 to the participants of its Technology Adoption Program, a move that indirectly points out that the development milestone could, in fact, be RC-Escrow, although there is no official confirmation from Microsoft on this matter.