Jon Flanders just announced our newest Pluralsight course — Applied BizTalk Server 2006 R2 — that covers all the new features/technologies built into the new R2 release currently in beta.
It covers the new WCF adapters, WF integration, BAM interceptors, the new RFID support, EDI/X12, and the new .NET adapter framework built on WCF. You can find more course details here.
The first public offering will be held in Los Angeles, CA mid July.