Xbox One: Digital distribution and pre-ordering games

Having read a lot about Xbox One, I've decided that I'm going to purchase my games via digital download, rather than boxed copies. I understand most of the limitations of that that, including not benefiting from bundles or lower pricing that retailers might offer.

The one thing that I don't believe I've seen any information about is the ability to pre-order a digital download of a game, and whether you might be able to get pre-order bonus content by purchasing titles this way. It seems to me that it would be reasonable to expect that you'd be able to pre-queue a game download ahead of the release date, and it would ideally be possible to have your console download a game ahead of the release, but only make it available to play when the street date ticks over.

Has anyone else seen/heard anything about that sort of functionality yet?