Forza Motorsport 5 will run natively at 1080p at 60 frames-per-second. However, Microsoft won't enforce that standard on all Xbox One games.
According to Turn 10's content director John Wendel, "I believe we're uniquely positioned to deliver on that challenge. We're a huge epic game that's going to be running at 1080p, 60fps on the next-gen console, so it's an incredible opportunity on one hand, but you have to be incredibly flexible and agile and self-aware on the other hand."
However, Microsoft Studios vice president Phil Spencer stated that the company has reassured its Xbox One developers that 1080p/60fps is not enforced in all games.
"It's important we give creators the best tools to create the best experience possible," Spencer related, "and I don't think that platform holders can dictate what the internal frame buffer size should be. "Forza 5 runs at 60 frames per second, but other people will make different trade-offs."
He added, "resolution is not the thing that maximizes beauty."