[peterb]

From what I can tell for Leica lenses designed for the D3 or the Panasonic L1 like the 25mm f1.4 or the 14-50mm f2.8-3.5 VARIO-Elmarit, you would need Panasonic's 4/3's adapter which goes for about $140 at B&H in New York. Best of all, according to Panasonic, unlike the Zuikos, the Leitz lenses retain their autofocus function.

The adapter also works on the fine Zuiko lenses as well (but currently only a few still have autofocus, otherwise you have to focus them manually like anything else connected via an adapter).

To use R lenses for the moment you find the R to 4/3's adapter designed for the Digilux 3, then take that and hook it up to the Panasonic 4/3's adapter (sort an adapter to an adapter).

But there may be an R to Micro 4/3s adapter on the way.