Visual Studio 2008 Beta 2 has been released today! Here is the link if you want to download the bits. I'd highly recommend the Virtual PC image - if you opt for the full install, you should use a test machine, don't install it on a production machine (although it looks and feels rock solid - it's still beta).
I made a really cool discovery on the MSDN website - you can take a look and learn about the new features of Visual Studio 2008 and the .NET Framework 3.5, and better yet, download the internal feature specifications! For example, here is the specification for the new Continuous Integration feature in Team Foundation Server 2008 (the document has a nice Orcas graphic). It gives you some insight on how Microsoft plans out features in a product - you can use a similar template to plan out features on your own website or application.