Microsoft seems to be pushing much closer to the RTM of Windows 7 with the latest build that has been leaked on the web.
Windows 7 build 7264 it the first version that no longer uses beta/RC keys. If everything goes well then Microsoft should be right on track for the July 13th release of the RTM.
This should be something that hackers everywhere are jumping on. As is no longer accepts the beta and RC keys, it should also feature the retail activation and hackers everywhere will be dying to claim to be the first to crack it.