FWIW, it appears Valve is sponsoring development now. Vicki, one of the maintainers of the SteamOS kernel, is the most recent contributor to https://github.com/torvalds/linux/blob/master/drivers/hid/hi...
It's too annoying to search more recent linux-input submissions to see if anything has been pushed upstream yet specific to the new controller.
FWIW, it appears Valve is sponsoring development now. Vicki, one of the maintainers of the SteamOS kernel, is the most recent contributor to https://github.com/torvalds/linux/blob/master/drivers/hid/hi...
It's too annoying to search more recent linux-input submissions to see if anything has been pushed upstream yet specific to the new controller.