No... I'm not going. I should though. Given the fact that I'm working on this highly secret hush hush Web 2.0 project attending Mix 07 would have been ideal to maintain my network and maybe even do some demos for key persons. I had to pick between TechEd 2007 and Mix 07 and at the time of the decision (a month or 2 ago) it made more sense to go to TechEd.
Decisions turn old fast in the Web 2.0 world...