As Vassilis notes, Microsoft has gone back to
Where the tools have no name. And some people aren't that happy about it.
Now maybe it won't be that bad, but judging by the comments left when people tried to re-install Windows 2003 SP1, it seems like the supposed salvation is still somewhere lost in the details.
And since many applications are still just running with DotNet 1.1, now you'll have "do you have DotNet 2.0 on it" or maybe DotNet 3.0 or maybe they will have to rely on the actual four digit version #, which is how their directories are named.