Microsoft has released a beta version of BizTalk Server 2010
BizTalk Server 2010 Beta
BizTalk Server 2010 Beta is an integration server that provides connectivity, Business Process Management (BPM), and SOA/ESB capabilities. It also includes Business to Business (B2B) integration capabilities, Adapters, Accelerators, and an RFID platform.
BizTalk Server 2010 Beta