I recently installed windows 7 x64 on my Dell Inspiron 1720 laptop and I can tell you that the beta 1 is already better and faster than Vista x64 with SP1. This is the first thing I noticed and really liked.
When I do photo editing I use my laptop connected to an external monitor, the wide gamut 24" HP LP2475w. Previously to Windows 7 colors looked over saturated in Windows when using applications that were non color managed. Especially the reds and greens. This a known issue with wide gamut monitors and there was not much one could do about it other that using color managed software(Adobe Photoshop, Bridge etc)
The good news is that Windows 7 is finally color managed and supports wide gamut monitors. I tested it today: connected the laptop to my HP LP 2475w, calibrated the monitor using my Huey Pro calibrator and FINALLY GOT GOOD-LOOKING REDS AND GREENS IN WINDOWS!!!
You can download and use Windows 7 for free until June 2009.
Here is a link from Wikipedia about the new color depths/gamuts supported in Win 7: http://en.wikipedia.org …New_color_depths.2Fgamuts
