I just saw this on the wire: ReSharper 4.0 has entered Beta a Beta Candidate now as of build 804. If you want it, go get it here: http://www.jetbrains.net/confluence/display/ReSharper/ReSharper+4.0+Nightly+Builds
If you just want to see what is new: check out this page:
http://www.jetbrains.net/confluence/display/ReSharper/ReSharper+4.0+EAP+Notes
Finally, there is another deal going on at JetBrains. DotTrace has gone to version 3.1. For a limited time you can now buy the Personal version of DotTrace for $199.
Note: Ilya Ryzhenkov corrected me, this is just a Beta Candidate.