I just released an update to VsVim for Visual Studio 2010 Beta2. This should be available shortly from the extension manager in Visual Studio or it can be downloaded directly at the following link
Notable Bug Fixes
Source for this release is available at the following location. It is released under the MS-PL.
The next planned major update is version 0.7.0. The two main features of this release will be the addition of Visual Mode and the :substitute command. Additionally I plan to flesh out a lot of the areas in normal, command and visual mode.
The usual caveats and expectations
This extension is being released by me, not by Microsoft. As such the support level for this extension is equivalent to the amount of free time I have to put into it.