Xbox One Could Get Original Xbox Backward Compatibility
The Library Could Expand Even More
Hadlee Simons on Twitter asked Phil Spencer what the possibility would be of original Xbox games running on the Xbox One since Microsoft is working on an Xbox 360 emulator. Phil retweeted that the idea is there, but the 360 emulation for backwards compatibility needs to be finished first.
Phil mentioned that he asks the BC team the question a lot, so the possibility is there, it will just take a little while. Several Xbox 360 games are slated to be backwards compatible November 2015 with more hitting the list following.
Source: Phil Spencer Twitter