I've successfully installed Windows 8 x64 Release Preview on a 2010 Macbook Air (4GB/256GB). I was also able to install the Apple Boot Camp tools without incident, but the computer will intermittently freeze up completely (need a forced shutdown) for no apparent reason. As such, there is no logging information to help me troubleshoot this any further.
I have no other software installed at this point; only the latest updates from Microsoft. Any ideas?