I'm taking the recent comments from Canon executives hinting at the need to "improve DSLR video quality" to mean they could give us compressed 4k in the 7DII. If in the $2k range for body only, I'll order one right away.
To save face for their higher end customers, Canon can --
-- unlock 4k raw capability in the 1DC through firmware or announce a successor model
-- Update the C300 and C500 with improved specs through firmware or free dual-pixel upgrades or simply lower the prices a bit. The pros who use these cameras will not stop using them because of a 4k 7DII. They'll just also buy the 7DII.
Or Canon can announce a 7DC, separate from the 7DII, which would focus only on 4k video, and then charge $4k for it