Hi dde,
Hard stats will always be whatever you want them to be, but we've been seeing a lot of community growth this year in forums and blogs. We've also been seeing F# jobs (and jobs seeking F# skills), and commercial adoption from a number of places, some large, some small.
Growing the community depends on improving F#. The F# team at Microsoft (both Research and Developer Division) understand that the research release of F# was not usable for large scale commercial software projects, e.g. because the lack of a really usable project system. We're addressing the issues behind this in our CTP release.
Looking forward, I expect we'll see a real growth in F#'s role as a productivity tool in applied functional programming. What pleases me most is when we get people telling us that they enjoy their work more as a result of using F#, just like you just did :-)
Kind regards
Don