No progress unfortunately. Gallio's extension to the mstest runner also doesn't pick up F# tests, and according to some people on the Gallio mailing list, that is "surprising". However they told me they were working on their own independent visual studio integrated test runner.
Despite some insistent questions the F# team has been uncharacteristically quiet about this whole thing, so yeah, hope for the best.
Try using testdriven.net, which should work great with F#.
Kurt
http://fortysix-and-two.blogspot.com/