Thanks to So for the heads up...BizTalk Server 2004 connects systems, people, and trading partners through manageable business processes. Building on Microsoft Windows Server System and the .NET Framework, BizTalk Server—now in its third major release—is the foundation for the "Jupiter" vision and represents the first major milestone in delivering an integrated, interoperable, modularized, extensible, and secure e-business solution that enables companies to connect information, systems, people, and processes.
BizTalk Server 2004 will be available at the end of 2003. Pricing and licensing have not yet been determined. Your right to use this beta will automatically expire upon commercial release of BizTalk Server 2004 or on March 31, 2004, whichever comes first.
To obtain a copy of BizTalk Server 2004 beta, you could primarily order a CD, the beta will be downloadable from the MSDN Subscriber Downloads site for registered customers, Technet and MSDN subscriptions will also have the beta included.
Video: View Flash Demo
View: Biztalk Server 2004 Beta
News source: Microsoft