Andrew Stopford has announced the release of MbUnit \ Gallio v3.2 with lots of new goodness. His own blog entry contains a quick runthrough of what’s what, but the full release notes can be found here, and you can find the download here.
I should also highlight the new documentation wiki over at gallio.org. This contains all the previous documentation efforts started when I was contributing docs for this project plus a lot of new stuff. Excellent work guys! Glad you found a publishing mechanism that suits you the best.