Brian Harry has posted a list of features that will be in the upcoming beta 1 of Visual Studio 2010 Team System. Unfortunately, the date of release for beta 1 has not been announced yet.
Architecture (http://blogs.msdn.com/camerons/)
- Architecture Explorer
- Layer diagram
- Use case designer
- Activity designer
- Component diagram
- Logical class designer
- Sequence diagram
- Modeling project system
- UML Model explorer
- Architecture validation during build
Development & Database (http://blogs.msdn.com/habibh/)
- Historical debugging
- Test impact analysis
- Improved code analysis
- Improved profiling (especially multi-tier)
- Database extensibility
Lab Management (http://blogs.msdn.com/amit_chatterjee, http://blogs.msdn.com/lab_management)
- Multi-tier Environment creation and management
- Automated deployment
- Easily manage machine pools
- Network fencing
- Checkpoints
Test (http://blogs.msdn.com/amit_chatterjee, http://blogs.msdn.com/james_whittaker)
- Test planning
- Test case management
- Test prioritization
- Run management & reporting
- Project quality reports
- Manual test execution
- Diagnostic recording (environment, video, etc)
- UI Automation recording
- Coded UI tests
TFS (my blog http://blogs.msdn.com/bharry)
- Work item hierarchy & linking
- Improved Agile template
- MOSS & WSS Dashboards
- Simplified reporting
- Improved support for parallel development
- Rollback
- Build queuing and pooling
- Gated checkin
- Simplified setup
- Scale out of web and data tiers
- Admin console
- Project move/archive/restore