Possibly not. Sometime soon (I was told the date, but I forget) Microsoft is going to end the policy of allowing corporate buyers to downgrade to XP on machines that come with Vista. That means that any new machines deployed above and beyond their existing volume licensing agreements will most likely be Windows 7 (the other option being Vista). Since corporate IT likes a consistent desktop, that will spur major upgrade projects. That will put 7's foot in the door in a way that Vista never enjoyed, and when people use it on a daily basis at work they will be more apt to accept it at home. Add to that the fact that 7 is already getting far better treatment in the press than Vista received (though it is not that much better than Vista to warrant such a turnaround) and the future looks pretty rosy for this new version.
For me, I can't tell much of a difference between 7 and Vista on a day to day basis. I think 7 is better for gaming, but at the office Vista, and expecially Vista SP2, has proven to be an excellent OS.