crashwins, since the E-P3 doesn't exist yet, the discussions about it and/or rumors etc., will be found in this News and Rumors forum. There's already a thread in there which you should certainly add your questions to: https://www.mu-43.com/f66/new-olympus-ep3-rumor-6236/ I know you're not alone in wondering about this possible new version. Lots of speculation going on! Personally, I'd love it if they'd come out with one with a built in EVF/OVF similar to what the Fuji X100 is supposed to have. I have no idea if this is possible or likely.
I'm going to close this thread in order to encourage the discussion to continue in the existing one in the News and Rumors forum.