Some fun stuff in there:
- Multitargetting - which means that you can target the .NET 2.0, .NET 3.0 or .NET 3.5 framework. (You don't need a side by side installation of VS2005 and 2008)
- Better designer support (they took the design engine from Expression web or SharePoint Designer for that matter ... :)) - is used to provide better designer support for web developers
- Visual Studio is now extensible for other platforms as well - there was a great demo from Dan Fernandez where he showcased how he used Visual Studio 2008 to build a plugin for World of Warcraft.
- Builtin support for all the nifty new .NET 3.5 stuff such as LINQ, etc ...
Update: here are some other things that they announced:
- Popfly Explorer : an addin for Visual Studio to easily create and host Popfly websites.
- CTP download available of Sync framework - also take a look at Introduction to the Microsoft Sync Framework
Greetings from Teched Europe Barcelona ...