From a CNet.com article:

Intel will roll out Vista internally only once the first service pack of the operating system has been released, and Dell is likely to do the same.

The usual feelings: Microsoft ships the “final beta”, and lets all of us be the “final 50 feet of the assembly line”. Service Pack 1, due by the end of the year, is the real shipping product. Intel and Dell, for the computers they own and use, aren’t going to mess with it until then.

As for vista, I have become pretty darn used to it and like it now, but I am still having some video problems and need more RAM (and I already have 2GB of pretty fast RAM!).

Read it here