Looks like a confirmed no hot-shoe mount. Don't think this is wise because it negates buyers from even considering buying a speedlight from Canon. I infrequently use the SX50 with a 600EX-RT because the onboard flash just doesn't have enough flexibility. My $150.00 refurbished SX50 is looking even more worthwhile keeping and not upgrading.
At this rate, they will remove the shutter button to save money on the next round
They claim that 4K video is cropped from the centre of the sensor. Presumably, the 1080 video will be cropped from the same area as the 4K, but with 2X2 pixel binning.... The HD video, if they use 4X4 binning, will take up 75% of the full width of the sensor (3840 out of 5184 pixels)