i think it's fake.
Because if Olympus decide to go FF, their lenses will be abandoned. There will be a new mount like Sony which is sucks. I love M43 and their concept.
They already have two formats after abandoning 4/3, but still sell stuff. It's not happening and it would kinda be like them saying after all these years that "M43/43 sensor isn't good enough after all...we need to go bigger." Plus the market wouldn't be big enough to justify jumping into the FF arena...esp with slumping sales and camera saturation.
you can easily can print 16x20 and larger w/ what exists now at relatively high ISO...why would they go to a larger sensor>?
Going FF would be an admission that m4/3 is a failure, which it is not.
Leica has been FF since the 1920's. When they introduced the medium format S2, was that an admission that FF was a failure? Of course not. It's just another format. A format is not a religion — you can have more than one. If you adopt a second one, it doesn't mean the first one was a failure.