Wow as an m43 camera owner I'm definitely interested in this.
Looks like quite the decent portable body and a good alternative to ricoh's GR sans fixed lens.
Yeah it's still going to be a bit bigger but it sure beats having to lug around my oly em1 or ep3.
If somebody is interested in this and unfamiliar with m43 lenses, good lenses that would match the portability factor of this would be a pancake type lens such as a lumix 20mm f1.7 (one of my favorites, best bang for your buck period), lumix 14mm F2.5, zuiko 17mm f2.8.
As pictured on their site, another plus of m43 is you can use legacy lenses (i.e. from your dad's film slr camera in the attic or garage) with a corresponding adapter.