The Canon G7X Mark III is coming! Expect to see it hit the shelves in August 2019.
What to expect?
Early reviews suggest the physical design of the Mark III is similar to its predecessor, though it's a bit lighter. While the lens remains the same as before (24-100mm equiv. F1.8-2.8), the camera has an all-new sensor: a 1" 20MP Stacked CMOS, which up until now was a Sony exclusive. Powered by Canon's Digic 8 processor, the G7 X Mark III can shoot raws at a blazing 30 fps with AE/AF locked, though the burst rate drops down to 8.3 fps if you want continuous AF.
The PowerShot G7 X III features live-streaming to YouTube capability via a wireless connection, vertical video support, 4K up to 30P high-rate movie with no crop, full HD up to 120p, and an optical 4.2x lens.
A lot of Canon's marketing is focused on the live-streaming capabilities of the camera, which are not really a huge thing for underwater photographers "in the field" as it were.
Should we expect a new housing?
Ikelite - Yes. Available here.
Nauticam - Yes. Available here.