You've likely heard the news that Vista is about to enter the Release Candidate (RC) stage within the next week or so (after the US Labor Day weekend). It is also supposed to be the next broadly available release since the "beta2" release a while back. While MSDN members (software developers) and select MS testers have had access to interim builds, RC1 is supposed to be available for everyone. The next Diskeeper beta for Vista won't occur until after RC1 is out and we've done the approriate testing on our end. My apologies on not having released supported betas for some of the more recent interim builds of Vista. I know I said that we would, but we've been caught up in the next Diskeeper release and unfortunately, haven't had the time.