Quote - f there is an image plugged into diffuse AND one of the other channels now it gets auto corrected to 1.0 for us where it did not change before.

It's not quite that simple unfortunately: that behaviour is inconsistent. I have a scene where two materials are set up in exactly the same way, but use different diffuse colour maps. One switches to Gamma = 1.0, the other stays put. Unless you send the render to Queue Manager, in which case it does change the gamma. All in all, a real pig's breakfast.

And lo, as I've been typing this, a message from SM: "The issue is resolved in the upcoming update."

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Windows 10 x64 Pro - Intel Xeon E5450 @ 3.00GHz (x2)

PoserPro 11 - Units: Metres

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