Summilux 25/1.4 and Panasonic GF2 - will it work?

[umboody]

I'm a little bit confused here and don't want to shell out the money until I know for sure - will the Panasonic/Leica Summilux 25/1.4 4/3 lens work on my Micro 4/3 Panasonic GF2? Does it need an adapter? Will it still be autofocus (although this isn't really an issue, would still be nice...)