The latest version of BizTalk is BizTalk Server 2009 and IDE to develop application is Visual Studio 2008 SP1.

Top New Features

BizTalk Server 2009 introduces enhancements and new featured in four main areas:

Updated Platform Support

Support for Visual Studio 2008 SP1

Support for .NET Framework 3.5 SP1

Support for Windows Server 2008

Virtualization support with Hyper-V

Support for SQL Server 2008

Developer & Team Productivity

New Application Lifecycle Management (ALM) experience - with Support for TFS - integrated source control, bug tracking, unit testing, MSBuild automation

Enhanced Developer Productivity with Visual Studio project system updates & Map Debugging

SOA and Web Services

ESB Guidance 2.0

New UDDI v3 Web Services Registry

New and enhanced LOB adapters (Oracle eBusiness Suite, SQL Server)

Enhanced host systems integration (WebSphere MQ, CICS, IMS)

Enhanced BAM support

Business to Business Integration

New Mobile RFID Platform

New RFID device management and industry standards support

Enhanced Support for EDI and AS2 Protocols and Drummond certification

Updated SWIFT Support and SWIFTReady Financial EAI Gold certification

Please refer to http://www.microsoft.com/biztalk/en/us/whats-new.aspx