figuerres...before I joined Microsoft I was the same way. I downloaded and installed each and every 2005 build I could get my hands on...by the time 2005 RTMed...I was eager for the next new thing...
I did learn one valuable lesson from that release cycle....instead of going broad on all of the technologies in that release I started going really really deep on ASP.net and TFS.
With this release of VS and the .net framework...I'd encourage you to go deep on WPF and the new silverlight stuff...especially sketchflow....and because I eat, live, and breath VSTS/TFS...check out the new testing tools.
And in terms of the release of beta 2...i just get the feeling you'll be way ahead of everyone else when it comes out...and before you know it....you'll think of 2010 as being that "boring old release". I know that happened for me the day after I had 2005 Beta2 in my hands.
But mark my words...the first time you run into a bug in 2010...you'll shake your fists at the sky and wish Microsoft took longer fixing bugs....so remember with your eagerness comes bugs....good "stable" products come to those who wait.