Jonathan Eastland has written a review in current issue of F2photo mag. which can be read at
www.f2photo.co.uk/ but you may need to register to read it. He is attracted to the 4/3rds format but criticises the performance of the optical viewfinder and indicates that the Liveview alternative is insufficient to permit accurate manual focusing. He also didn't like the plastic barrel of the lens under the substantial rubber grips. The build quality of the lensdoes not he says compare with the metal barrels used on the Olympus E type lenses.
Jonathan's description sounds very much like the build quality of the Panasonic FZ20 & 30 models....................perfectly adequate but not necessarily satisfying to use!
As Jonathan Eastland is a long time Leica M user, we must draw our own opinions from this not very encouraging review.