Download BizTalk 2006 R2 Beta 2 bits/SDK

http://support.microsoft.com/?kbid=936046

Pluralsight Training: Applied BizTalk Server 2006 R2 (4 days) – July 17 in Los Angeles, CA and November 6 in Waltham, MA

http://www.pluralsight.com/courses/AppliedBizTalkServer2006R2.aspx

QuickLearn Training: Updating Your Skills For BizTalk Server 2006 R2 (3 days) – August 1 in Redmond, WA and August 29 in Stockholm, Sweden

http://www.quicklearn.com/class_Updating_Your_Skills_For_BizTalk_Server_2006_R2.aspx