Egami spotted a new Olympus patent describing a Lens Reversing Ring you can put on front of your MFT lens (just like a filter). This will allow you to shoot macros on all(?) MFT lenses. Something similar has been already be made by Nikon with the Nikon BR-2A. But the Olympus patent describes a more high quality variation that should get rid of the issues coming along such an adapter (chromatic aberrations and so on).
Don’t know if this is something I would buy but I am not a macro shooter :)