I said a couple days ago: "(I can't believe they haven't updated the GF1 yet. I hope they'll do something great with it, unlike with the G2, which was a pretty trivial update.)"
GH2, and it has just what I was looking for: (at least claims of) super-fast handling and autofocus (they say it's faster than a good DSLR!), and much-improved high-ISO performance.
It would surprise me if these are not real, and if they don't also make it into the next-gen GF camera. Kewl.
Update: Yes, it is super-fast, but it depends on the lens. The 14-140mm lens is designed to be extra fast. The older 20mm lens is much slower in focusing.