Windows 7 build 7600 is the RTM version that's on all the new PCs today. It's the version that was completed shipped by Microsoft last summer – but it appears as though the developers are still tinkering away at it.
Neowin reported that a Russian site Wzor, which has a history of Windows leaks, posted screenshots from a post-RTM Windows 7 build 7700.
While many of you will find the screenshot completely uneventful, given that there does not appear to be any visual changes aside from the version number, the real news here comes from the build strings that tell us the progress that Microsoft is making.
The latest leak is 7700.winmain.100122-1900, which tells us that it is build 7700 and it was compiled in the 'winmain' lab on January 22, 2010 at 1900 hours.
Build strings leading up to this latest one are:
Watching numbers count upwards is fairly uneventful, but it does prove that progress is being made on top of existing Windows Vista and Windows 7 code – perhaps en route to the release of Windows 8 slated for 2011.