hmm?

In what way?

All they need to add is vibration support on controllers and then they'd have full controller support

My guess is that OP is asking if the controllers are now supported in the menus like games on console or many games on Steam with "Big Picture" compatibility.

The answer is no, but if you're on a G25/27 or anything with a D-Pad on it you could, although cumbersome, use X-padder or else to bind your mouse with it and use another button as a left-clicky.
I too wish we could navigate the menus with a controller because I don't have a proper mouse in my racing rig to navigate through it. It would be awesome to navigate with a d-pad. ☺

That could be a nice suggestion for a future update.

game doesn't support the 180 degree rotation that a controller has