Yes, the patch 1.9 now supports the different knobs.
his is my mapping for to start with:
Rotary Switches: Diff and Brake Bias up or down (not sure this stays as I rarely fiddle with this and they can be easily bumped)
Black toggle switches: Fuel and Energy up or down
The silver switches in the middle seems to work only like a left or right activator, so I have mapped the left for Engine Status and Temps for a left and right turn.
The right switch is similarly for status view panels for a left and right turn.
(Note that these are functioning for left and right independent how they are set so for example, you can not map menus for the 1,2,3 and 4 position of one ****. It would have been nice but I guess in the race you don't want to spend too much time on flipping trough a menu so left and right probably works better)
The center silver **** does not seem to be in play as it only supports the settings for the advanced paddles.