Could Windows 7 accomplish everything that's expected of it? Probably not, but it makes a damn good run at it. The chaps over at Gizmodo have tested the gold master, the final version going out on October 22. Here's a taster:

Windows 7 is not quite a "Vista service pack." It does share a lot of the core tech, and was clearly designed to fix nearly every bad thing anyone said about Vista. Which ironically puts the demon that it was trying to exorcise at its heart. What that means is that Windows 7 is what Vista should have been in the public eye—a solid OS with plenty of modern eye candy that mostly succeeds in taking Windows usability into the 21st century—but it doesn't daringly innovate or push boundaries or smash down walls or whatever verb meets solid object metaphor you want to use, because it had a specific set of obligations to meet, courtesy of its forebear.

That said, if you're coming from Windows XP, Windows 7 will totally feel like a revelation from the glossy future. If you're coming from Vista, you'll definitely go "Hey, this is much better!" the first time you touch Aero Peek. If you're coming from a Mac, you'll—-hahahahaha. But seriously, even the Mactards will have to tone down their nasal David Spadian snide, at least a little bit.
-
Windows XP was a great OS in its day. Windows Vista, once it found its feet several months in, was a good OS. With Windows 7, the OS is great again. It's what people said they wanted out of Windows: Solid, more nimble and the easiest, prettiest Windows yet. There's always a chance this won't be a huge hit come October, given the economy and the state of the PC industry, but it's exactly what Microsoft needs right now. Something people can grab without fear.