Microsoft just posted Office 2010 and SharePoint 2010 on MSDN and TechNet. Time to build up the development machines and start trying out the Visual Studio 2010 Beta 2 development integration.
Don’t forget, you can now install SharePoint 2010 on a 64bit Windows 7 machine (or Vista) for development purposes. Make sure you follow the instructions located at http://msdn.microsoft.com/en-us/library/ee554869(office.14).aspx. You need to manually download and install a set of prerequisites and make a change to an installation configuration file.
Good luck and have fun!