As a follow up to their very well done Visual Studio 2008 and .NET Framework 3.5 Training Kit, the team has released a "may preview" for the .NET 3.5 Enhancements Training Kit. Read more and download the kit at JC's blog. He describes what's been added to this revision including presentations on the hot, new stuff:

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You can definitely enhance the quality of future revisions and next generations of this sort of training by simply dropping JC a line.