What's really new in Windows 7?

Bring an open mind. One refrain I hear regularly from Win7 skeptics is that Microsoft is indulging in “change for the sake of change.” But every time I look at a feature that’s been redesigned, I see a reason for it. If you’re willing to try to adapt your behavior, you’ll be more successful.
There’s a learning curve. If you’re bound and determined to do things the way they’re done in Windows XP, then stick with Windows XP. If you’re deploying Windows 7 in an organization, you’ll need to budget for training. To Microsoft’s credit, they’ve resisted the urge to stuff their new OS with wizards and pop-ups bragging about the new features. The flip side of that bargain is that you’ll need to invest a little effort to find the new stuff.
One size does not fit all. Microsoft’s Raymond Chen neatly summarized the dilemma of developing for the Windows interface: “No matter what you do, somebody will tell you that you’re an idiot.” If they fail, they create an annoyance, of which Windows 7 still has its share. But hopefully those are fewer and less annoying than they were before.

Read it from ZDNet