I downloaded my copy of the Windows 7 Beta (x64). Microsoft did a great job with the installer. Very hands off isntallation. It went fairly quickly too. I spent about 45 minutes on the installation.
I installed Windows 7 on a fresh hard drive on my main machine. So far I the one thing that bothers me about Windows 7.
The task bar is a bit unusual. I found it hard to tell what was a shortcut to an application and what was a running application. I was able to customize the task bar a bit to be more fmiliar to me. Just right click on the task bar and choose properties.
World of Warcraft ran great. I played WoW on Windows 7 for about an hour. Ran smooth just as it does on Vista 64.
I have a driver problem with my bluetooth adapter but I also have a not quite right driver in Vista 64 as well.
Overall Windows 7 is looking good. I'll be using it more over the next several weeks and share anything else I find.
Update on 2009-06-13 19:43 by Sam Butterworth
I have formatted my Windows 7 Beta drive and installed the Windows 7 RC. This new build is very solid. I have been running it since it was released on MSDN and have had no problems or complaints. I am impressed by the quality of this operating system. Microsoft has stepped up their game.
I look forward to dumping Windows XP and Vista when Windows 7 is released. Window 7 is more solid at RC then XP or Vista was at release.