What's the deal with the game resolutions? Most will run in 1080p? Trying to decide which TV to use, when it arrives. 1080p or one of my 720p sets.
It will probably be similar to the current consoles. The console will scale it up to 1080p or whichever resolution you select but that doesn't mean you are actually looking at 1080p textures. Many of the games on the current consoles aren't even running at 720p even though your TV might tell you they are 1080p.
http://www.ign.com/articles/2013/09/17/forza-5-runs-at-native-1080p-ryse-does-not
IGN has a story up about this using some of the launch game as examples. Forza 5 runs at 1080p native but Ryse will actually be running at 900p and but the Xbox One will output 1080p for both of them. I think in a lot of cases it is necessary for them to lower the resolution a bit in order to keep the framerate smooth. Most people won't notice a slightly lower resolution but if the framerate is bad and there is lots of jittery motion just about everyone will notice.