What appears to be the Canon PowerShot G7 X Mark III has passed FCC certification.
Not much in the way of specifications have leaked out in the FCC filing. However, a few things have such as size and information about the Bluetooth module inside the camera.
Canon PowerShot G7 X Mark III Information:
Size: 105mm (W) x 60.85mm (H) x 43.2mm (D)
Bluetooth: WM 601 / Bluetooth 4.2
I think it’s likely we’re going to see the PowerShot G7 X Mark III announced ahead of CP+, which begins on February 28, 2019.