Neowin posted a news story that an RTM escrow build of Windows 7 has been leaked on the Internet

Internal sources indicate that 7260 is still the latest build under the win7_rtm branch. Build 7260 carries the tag 7260.win7_rtm.090612-2110 and is an RTM escrow build meaning vigorous testing will commence to ensure this is the final code unless there are show stopper bugs. Folks inside Microsoft who wish to remain anonymous have also indicated that many people internally are growing tired and bored of the leaks and want development to conclude as soon as possible. I think everyone here at Neowin feels the same, lets see what the weekend brings.

Microsoft to RTM Windows 7 this week? Build 7260 leaks