OVF is history...EVF is the future...

"For years, pundits and industry leaders alike have predicted the end of the optical viewfinder, but enthusiast and pro photographers have stubbornly clung to them for their benefits over electronic viewfinders. Today, a new microdisplay from French company MicroOLED S.A.S. promises to take a big step towards erasing those advantages ."

http://www.imaging-resource.com/news/2012/01/27/new-evf-makes-it-clear-the-optical-viewfinders-days-are-numbered

Right now, A77 or Nex 7 has the best EVF so I am sure Nikon and Canon will come up with a better EVF this year. I read Nikon V1 or J1 and Panasonic G2, all are using decent EVF.