I've been watching the enhancements made to Photo in 1.7 on Mac, and I think there are two enhancements that didn't make it to the Windows version:
From 1.7.0.107 on January 24: The flood select tool now has a refine button.
Not sure when this one came in: Allow Ctrl key to be held when typing numbers in a brush tool (will change flow instead of opacity).
Should we expect either of these to make it into the Windows version? Or are they there, and I've missed them?