I'd relax for a while. In the past, new versions of Vegas have followed a few months after Acid. Acid 5 isn't out yet and there isn't the kind of buzz and excitement on that forum yet that preceded Acid 4. Of course, Vegas 5 might be released prior to Acid 5 but I certainly wouldn't hold my breath. My sense is that there is a much greater demand for Acid than Vegas and I would speculate that the pressure to get a new version of Acid out is pretty significant. ;-)