WZOR had posted about a build 9200: 9200.16384.120725-1247
His explanation(or rather, guess) is that, this is a win9 prototype, but my idea is : this just doesn't make good sense.
Well, actually it is not a joke, and not "garbage", began work on Windows 9, it means that work on Windows 8 is completed and the final RTM build has appeared!, well, this is the first build of Windows 9: 9200.16384.120725-1247
There could be another possibility: build 8888 could be just a smoke screen, the actual win8RTM will be build 9200, because it conforms with the vista/win7 numerology:
1. It is a multiple of 100 and 16
2. It also has a minor build number(16384 atm).
I guess we just have to wait for the final RTM sign-off, then we'll know for sure if is 8888 or 9200.