"Panasonic has also announced plans to launch adapters that enable Micro Four Thirds cameras to accept Leica M and R-mount lenses, expected to arrive in the autumn. "
Think it's worth waiting to see what the Samsung NX is like - with the better crop factor (1.5x instead of 2x), a 35mm is still a useful 52.5mm equivalent, rather than a less useful 70mm equivalent.