I have been playing with the "Get the beta" page andit appear to me that Microsoft is only giving out 12 unique keys for this betarelease.so far I have only been able to get 6 unique keys for x86 and 6 unique keys for the 64bit version of Windows 7. Browsing the net seems to confirm this, there are only a handfull of keys that are shared with everyone.Has anyone else seen more than 6 keys for either x86 or x64 releases?

I don't know if mine is unique, but I found a list of 10 (of the 12 keys you are talking about) and mine wasn't in there.

A list of keys was posted on slickdeals.net and none of them would activate on my PC. Also, keys work on both x64 and x86 editions; they are not locked to one platform.