Do you want to know what's new in BizTalk Server 2006?  Find out by watching this upcoming webcast.  You can learn about BizTalk Server 2006 and get Beta 1 here.  If you are interested in deep training on BizTalk 2006, here are a few options:

Business Process Integration & Workflow Conference

Deep Dive training for BizTalk Server 2006 Beta

Guerrilla BizTalk 2006

There are quite a few BizTalk 2004 webcasts available here.