Download the Windows 7 RC from Microsoft now!
At this point, the downloads are still moving along at a good pace (560K/s in my case). Don't forget what happened last time, though. The surge of Beta downloaders proved to be too much for Microsoft's servers and caused downtime and slow transfers for some users.
The good news is that you'll have plenty of time after the initial rush to get your hands on the official DVD ISOs. Microsoft announced yesterday that download links will be available through July 2009.
Both the 32 and 64-bit version are available now in five languages: English, French, German, Spanish, and Japanese. You'll need to sign in with your Windows Live ID and fill out a brief form first, unless you already did so for the Beta. In that case, your previous details should be pre-filled.
Just make sure to uncheck the subscription boxes if you don't want Microsoft bulletins showing up in your inbox. After that you'll be presented with your product key and two buttons - one for your download and one for installation instructions.
And don't forget - as I mentioned on a previous post, there's no need to burn a DVD if you've got USB hard drive handy.
Also worth noting: While the RC won't expire until June 1, 2010 your system will begin shutting down every two hours starting March 1. It's Microsoft's way to "encourage" you to install an RTM version which ought to be out by that time.
Good luck, and happy downloading!