The Öhlins RXF 34 m.2 trail fork will only work with 29" wheels, it has a 44mm offset, and either 120 or 130mm of travel that can be changed by swapping part of the air spring.
"Upside down" mountain bike forks promise some impressive advantages over their mainstream counterparts. Of course there are challenges as well, and Bright Racing Suspension is seeking to produce the optimal solution.