Honestly, this isn’t a stretch. Intense has been on a 650B roll lately with the new Carbine 275 and Tracer 275, and their frames have adaptability built right in.
The G3 dropouts are replaceable, so it’s likely (though not confirmed yet) that Intense’s Jeff Steber simply machined some new ones to accommodate the extra inch of wheel diameter. The M9 FRO (For Racing Only) frame has adjustable travel, geometry and shock rate and uses a straight 1.5″ headtube with pinch bolt. That last feature lets you use any sort of adjustable angle headset you like and get the geometry dialed to suit the course.
As is, they’re able to shoehorn some Kenda Nevegal 27.5×2.35 tires in there, but the top pic suggests it’s a tight fit for the fork’s arch. Rumor has it this one’s a one-off “lets see if we can do it” type project, but chances are pretty good we’ll see more of it in the near future. More info as we get it…