By all accounts, Microsoft has stepped up to the plate with Windows 7 - here's PC World on it:
There's no question about it: Microsoft has a hit on its hands with Windows 7. Even in beta form, the company's new desktop OS is garnering accolades from all corners of the blogosphere. By most accounts, the product seems faster and more stable than even Vista with Service Pack 1. And veteran Windows users everywhere are singing the praises of "new" features like the more refined User Account Control (UAC) mechanism and funky, Mac OS X Dock-like Task Bar.
I've heard from friends (and podcasts that I listen to as well) that the beta runs fine in things like VMWare and Parallels, and that it uses existing Vista drivers just fine. That's good news for MS - it means that 7 will hit the ground running. The only thing left is the branding exercise, which they muffed for Vista. I don't really expect a repeat of that - say what you will about Microsoft, but they rarely make the same mistake repeatedly.
There's a good news for Smalltalkers in this, too: We'll have to go through the process again, but our Vista Certified Smalltalk - ObjectStudio - should run smoothly under Windows 7. We've done some basic testing, and not noticed any issues. Which is not to say it's supported on Windows 7 - the OS is only in beta, after all. What it does mean is that we don't expect any real hurdles to supporting it quickly once MS goes to release.