Would you buy a Olympus OM-D-E-M1 now or wait?

Hi

Sold my E-M5 to buy the E-M1 as most of my lenses are now four thirds. The lenses will AF on the E-M5, but a little too slow with the adapter and I believe that they are much faster on the E-M1 because of the phase detection.

My question is: Are there any rumors that Olympus will be upgrading the E-M1 anytime soon?

I would hate to buy now, if this is in the works.I do not have to hurry as I also have a Nikon D7100.

Thanks