As noted on Soma's blog here, you can now download Beta 1 of Visual Studio "Orcas."  This has the new WF+WCF workflow enabled service functionality baked in, and will be the source of a lot of additional blog posts and samples in the coming days and weeks.  Stay tuned to the community blog roll to hear what other WF developers are saying about it, and let us know if you'd like your blog included in the roll.

All the usual warnings about installing beta software on production machines do apply, so have fun and let us know what you think!

 Update: You can also check out Soma on Channel9.