According to recent rumors from several source, Canon is planning to announced a medium format DSLR camera in September for upcoming Photokina 2014.
In 2013, there is no new Pro DSLRs from Canon released, but in the coming 2014 to early 2015, there will be a total of 4 new Pro DSLRs to be announced.
The rumored 44.7 MP Canon EOS-1 series camera is in heavy testing these days. This 44.7 MP camera has the ability of shooting 4K videos, but its eating batteries very fast. And Canon is still working on this camera for sensor, batteries and software. We will probably see a development announcement in late 2013 to early 2014.
According to Canonrumors, there will be no new announcements for EOS cameras and EF lenses in 2013. All new announcements will set in 2014.
With revenue drop on Compacts market, recent rumors said Canon is looking into Medium Format DSLRs for growth.