Yesterday, a listing for an Xbox One with a 1 Terabyte internal hard drive and Halo: The Master Chief Collection was put up on Amazon, with a release date of June 15th. The same date as Microsoft's E3 conference, which could indicate that Microsoft plans on announcing a new model of the Xbox One during their E3 press conference.
The Amazon listing, which has since been removed, also states that the controller comes with a 3.5mm headphone jack, something that has not been in previous Xbox One controllers.
Microsoft announced the Kinect-free bundle for the Xbox One during last year's E3, so a move like this wouldn't come as a big surprise. Microsoft also had a limited edition Call of Duty: Advanced Warfare themed system that had a 1TB hard drive.