With Toyota giving the Avalon and Camry AWD, I would think that Honda would also offer AWD for the Accord at some point in the future. However, Toyota only offers AWD on their base engine. I see Honda only offering (IF offering) AWD with the 1.5T.
The Accord is already stepping on Acura's toes. As great as this would be, I can't really see Honda offering Acura's SH-AWD AND the 3.0TT V6 for a Type R. And a wagon is just too much of a pipe dream.