I'd imagine that there are lots of older Olympus lenses about. Will they fit 4:3?

My thinking was that Olympus film camera users might like a digital camera to mount their lenses on. If they'll fit 4:3 then there's possibly no need for an APS-C option but if they wont there's still a market for an Oly FF surely.

I'm just a visitor here, you Oly fans know best, what do you do with older Oly lenses? will they fit 4:3?