Now that Honda has made the Civic wider, the Civic measurement is a whole lot closer to the Honda Accord. To make sure the Accord sales does not get affected by the Honda Civic, it is believed that Honda will be upsizing the Honda Accord as well.
We have not heard from Honda yet but new spy shots of the Honda Accord does seem to indicate that the Honda Accord will be slightly wider than the current model. The wider body will mean more space on the inside so we are not going to complain here.
It is also believed that the new Accord design will be based on the new Honda Civic and that it might be getting the Honda Civic engine options as well although the engines will most like be tuned so that it offer more than the Civic version. This is the Accord after all.