Pattern, what I'd heard was that what Boeing was looking at was a blending wing/body as a military transport - basically a next generation replacement for the C-17 and C-5 (so obviously years away).
Basically the idea was that the government would finance the development, then Boeing could repurpose the technology for a commercial transport.
BTW, going with a composite construction would help solve the issues with pressurization of the unusually shaped 'fuselage'.