Canon's EOS Cinema lineup has up to now had one 4K solution, the C500.  Brilliant but pricey piece of kit, where other video camera manufacturers have been pushing harder sooner.  Blackmagic Design has the URSA and Sony has the killer PSW-FS7 but both came in at a lower cost than the C500.  Canon has announced two new cameras, and a new recording format to try to establish a leg up in 4K.