Its official now. Windows 7 RTM has been signed by Microsoft. The final build string would be 6.1.7600.16385.090713-1255, which we had previously shared here. Check out our launch schedule to find out when you would be able to download the RTM or pick it up at a retail stores.
As for the RTM build, it is available on all popular torrent trackers right now. I will post some download details soon.