Here is a straight up cut and paste, no time to check it out but more warning is a good thing with the temp gauge. I can dig that.
- “Firmware Version 1.2.1 incorporates the following improvements and fixes.
- Extends the timing at which the high temperature warning indicator is displayed and the timing of automatic shut down of the camera due to a rise in internal temperature during Live View or EOS Movie functions.
- Optimizes program shift when the ISO setting of the camera is set to AUTO.
- Corrects a misspelling in the French-language menu.” (I Love This One!)