Stereo recording, finally
and surprise 1.8X lossless zoom during video recording which was rally unexpected.
Slide to zoom. First seen on 808 and most intuitive way to zoom ever.
Touch to focus and manual focus
These changes will make imaging and audio capture experience on Lumia 92X really more enjoyable. Check many tutorials posted by Nokia in their article on Pro Camera for Lumia 92X.
It is pleasantly surprising to see T-Mobile devices Lumia 521 and Lumia 810 amongst the firsts to get this update in US.