It appears Microsoft is testing a "variety of Xbox prototypes," according to a new report.
Microsoft's "testing a variety" of new Xbox One prototypes
Sources familiar with the matter told The Verge prototypes being tested contain "upgraded components" similar to those which improve the "performance of a PC gaming rig."
The report comes after FCC filings popped up last week suggesting Microsoft was possibly working on two new Xbox One models. One of which is assumed to be a slim model.
Since the FCC documents were discovered, the Brazilian equivalent of the FCC, Anatel, has posted an image of the new Xbox One wireless chipset mentioned in the FCC documents under NDA until June 25 (via NeoGAF).
The image shows chipset model 1683, and the FCC NDA expires the week after E3 2016, leading many to believe a new Xbox One model will be announced during Microsoft's press conference.
Microsoft will host its E3 presentation at 9.30am PT/12.30pm ET/5.30pm UK.