of course if you are already a part of the broader .net user group community, you've seen this already. but if you aren't (shame on you), you should head on over to azgroups.com and look at the event on the 20th of December. be sure to sign up to the AZGroups mailing list as well for updates and future events.
at the phoenix (tempe) installfest, people who are registered and attend will receive a special trial DVD of visual studio that will enable them to get a visual studio 2008 professional licensed copy sent to them as participating in this event...pretty sweet for being a supporter of the user group communities!