Spotted on the Instagram account of Aaron Bradford, this unreleased 29er prototype looks ready to shred. It’s hard to observe anything concrete from the low resolution image, but it appears the bike does away from the curved top tube that punctuated the design language of previous BMC 29er models, but still uses the APS dual short link suspension.
It also appears that the bike has internal cable routing for the rear derailleur, as well as internal routing for a remote lockout on the rear shock.