Unfortunately no. Hopefully we will see one some time soon but I doubt it and the only rumour that there is : http://www.43rumors.com/ft5-new-battery-grip-for-the-gh2-to-be-announced-by-early-2011-2/ sounds quite iffy to me.
*(random question) by the way, i just saw your signature and the equipment you have, which camera do you generally like/use more?. I know the pros and cons of each etc. just asking generally out of curiosity
Canon for the viewfinder and great timelapse, GH13 for not much aliasing, plus excellent iq with lpowell's peak rate hack. Both useful tools in the box.
