APC reckons Service Pack 1 for Vista will be out in the second half of 2007 and that it will include a lot of features that did not make it into the version to be released in a week from now.
The conventional wisdom has long held that it is not wise to move to a new Microsoft operating system until after SP1 in order to miss many of the issues that come with new code. But in this case it looks to me as if SP1 is intended as a rush job to make up for original features cut before RTM. I could be wrong about this. 11 months is how long it took for XP SP1 to debut and that would put the Vista SP1 release in December, 2007. But it sounds to me more like the release is planned for the summer and will contain mostly dumped features and not necessarily fixes for issues that have arisen since release.
I am not confident of Microsoft's ability to get Vista "right" and restored to it's originally planned glory for a while. Certainly not within a year.