Teched 2009: .Net 4

There have been a lot of talk on the upcoming release of .Net 4 and Visual Studio 2010. Here are some features that I have seen at Teched and have been looking forward to:

• Parallelism (have chatted on previous post on this)
• MEF - this is the extensibility framework provided by Microsoft. This looks very promising (have chatted about this in previous post as well)
  
• Visual Studio - they have numerous small enhancements like Removing recent projects from start page!!! I have waited so long for this.
  
• ASP.NET 4 - they have included some nice small enhancements such as having support for having multiple config files and aggregated to common config file, ASP.NET and javascript code snippets, One Click Deployment, Search Engine optimization and URL routing support (similar to ASP MVC framework).
• JQuery - this is a huge addition they have provided web developers. Microsoft has even gone as far to support this Open Source library. For those who havent worked with this yet, please check it out here.
  

Other features that I am not sure will work well (but we will have to see):

• Optional Parameters
  
• Dynamic Keyword
• EF4
• WF4