This works too if you are in crop or healing and want avoid cycling through the masks.
Yes, that is the new "Adjustment" icon I mentioned. Adobe wanted to streamline the functions I guess, so they added an icon for the adjustment sliders. Previously the Crop/Heal/Mask/Red eye tool were kind of an add-on that appeared on top of the Adjustment sliders (which they still do), but now we have an icon to jump directly back to the Adjustment sliders.
I work with two Behringer X-touch mini's with buttons mapped to the panels and knobs mapped to the sliders within that panel, so it doesn't really bother me. Except when I'm rotating or cropping, as I find that easier to do with my mouse.

