It is interesting to speculate. I would assume that they have determined that there is a market out there that BW has not yet tapped into, as a business simply cannot afford to produce something that provides some 'romance', but doesn't sell. I would have guessed an ILF bow. The BW guys told me a couple years ago that it's nigh unto impossible to build longbow limbs for their current risers, and achieve the results they demand.
But they've got some good options for the short bow market already, in the PSR and PCH. Could the new model be a 3-piece LB on a newly developed forward-mounted riser???