I'm pretty sure Win8 is going to become big in the mobile market. Probably not quite as big as iOS and Android, but certainly stronger than RIM's offerings, and stronger than Windows Phone 7.5

I for one am very likely to buy either a Win8 tablet or smartphone, and I'm probably not the only one. By getting a Win8 version out there, you'd be turning lots of happy customers into uberhappy customers, binding them to RTM once and for all ;)