Production Switchers

I notice in the new manual there are now key select buttons on the switcher for keyers 1-4. Is this a new feature in the carbonite black solo? I always used the soft panel to change key source. But much prefer to do it on the switcher especially for DVE keyed effects boxes. My switcher does not have these. Are we able to order replacement buttons to match the new button delegates. Live CC bank, key select and the shift selects for mini me 1/2.

When you press one of the key buttons above the bus rows, you can then directly select the source for that key in the aux bus row. I do it this way all the time for DVE keys.