Canon PowerShot G1 X Mark III is expected to be announced very near! According to the latest rumors from CR, Canon PowerShot G5 X is also receiving a Mark II version shortly!
Canon G5 X Mark II will retain the 1″ sized sensor, which is rumored to be 20.2MP, the same resolution of the current camera. The new sensor should be upgraded in image quality and and be equipped with DPAF.
Actually, the current PowerShot G1 X Mark II (and G1 X Mark I) features an 1.5″ sensor. It is 20% smaller than an APS-C sensor.
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