I sure am. I pre-ordered Windows 7 RTM Retail when it was cheap for £49.99. I should have it by next Friday.
As it's the Retail version I get two discs: x86 and x64. I'm hoping to go x64 but maybe forced to go x86 due to driver and software problems. It wouldn't be the end of the world as 3Gb is more than likely fine for me though. Vista x86 SP2 with 2Gb is basically fine for me, so given that Windows 7 is noticeably faster and I plan to upgrade 3Gb around the same too (or 4Gb if I do end up going with x64), I'm confident it will be enough.
I plan to test the x64 version on a second hard disk (which currently has the x86 RC on it) and if it doesn't go to plan install the x86 version on my main hard disk, obviously formatting and reinstalling.
With Windows 7 Beta x64 (RC untested) I couldn't get to work:
Adobe Photoshop Elements 7 - It crashed out during install. It's apparently buggy on x64 and annoyingly Adobe only provide a x64 version for Adobe Photoshop CS4.
Windows Live Essentials 2009 Wave 3 - I cannot remember but I think I installed the x86 version, not knowing there was a x64 version, so that could've been my fault. I'm pretty sure there's only an x86 version for the actual programs but some of the engine files (like Microsoft Application Error Reporting) have x64 versions. Although I think it's the same main install file and during install it detects which you have, then downloads them. So it may not have been that after all. I have found v2009 Wave 3 very unreliable to get installed on multiple PCs though.
Due to Toshiba's annoying policy of not supporting x64 on my laptop (despite the hardware supporting 4Gb) I've been unable to find drivers for everything. The vast bulk of it yes but some small stuff in Device Manager I couldn't find drivers for.
As I have to use unofficial x64 Nvidia drivers for my Nvidia Go Graphics card, I couldn't get mulit-monitor support to work. Nvidia don't provide drivers for their own Go Graphics cards at all and Toshiba haven't released x64 drivers for my model. I had to use drivers for the Retail cards with a modified .inf to allow it to install.
All the above worked perfectly on Windows 7 Beta x86.
It'd be dumb to get x86 at this point, that is yesterday's news.
Definitely test it and if it works agreed. I may have no choice. As I have a retail version I can freely install it later on new hardware when I need to buy a new laptop.
I'm quite happy with Vista x64 SP2.
And I'm largely happy with Vista x86 SP2 but boy Windows 7 is better. I'd definitely be giving it some though. I cannot wait to upgrade.