You might get access to the early bits on the following page.

Read more about it on the ReSharper 4.0 EAP Notes page:

C# 3.0 support 

  • Implicitly typed locals and arrays
  • Extension Methods support
  • Object and collection initializers
  • Automatic properties
  • Anonymous types
  • Lambdas

New and updated features

  • External Annotations
  • Code Cleanup
  • Plenty of new analyses
  • Complete Statement
  • Completion with CamelHumps
  • Refactorings
  • Recent Edits
  • To-do items on identifiers and string literals
  • Support for solutions using different targets
  • Project References
  • Live Templates Editor
  • Dozens of other features

A general overview of the ReSharper 4.0 Roadmap!

Just started to install it!