Kipon realized the first EOS to MFT adapter with built-in aperture control! You can already found them on eBay (Click here). I don’t know how bad or good they are. Someone tried it?
The adapter is not compatible with the following Canon EF S lenses:
EF S 10-22mm; EF S 15-85mm; EF S 17-55mm; EF S 17-85mm;
EF S 18-55mm; EF S 18-135mm; EF S 18-200mm; EF S 55-250mm; EF S 60mm