The RTM bits of BizTalk Server 2006 R2 are now on MSDN Subscriptions! Subscribers can download the developer addition in several languages. Congrats to everyone who helped make this happen!
There are some sweet new features in this version of the product…my favorite feature, of course, is the new messaging-layer integration with WCF provided by the suite of new BizTalk WCF adapters. You’ll be hearing more about this from me shortly as I’ve been working on content in this area.