It looks like one of Microsoft's E3 2016 surprises may have been revealed early.

A GameStop source told GameSpot today that the store's internal database was updated with a listing for a 2 TB Xbox One model. As you can see in the image below, the system is priced at $449. A placeholder release date of December 31, 2016 is also visible, suggesting it may come out this year.

No further details about this console have been divulged, so we don't know just yet how it might differ from the existing unit, beyond the larger hard drive. We contacted Microsoft for comment, but were told, "We do not comment on rumors or speculation."

Microsoft has never released an Xbox One with a 2 TB hard drive. The company does sell versions of the system with 500 GB and 1 TB hard drives, however, including the 1 TB Elite model. This system started at $500, but now goes for $450 thanks to Microsoft's recent Xbox One price cut. All models of Xbox One also support external hard drives.

If this system is revealed at E3 next week, it might be just one console that Microsoft unveils. The company is also rumored to announce a slimmed-down Xbox One and potentially one or more streaming devices.

The Xbox E3 2016 briefing is slated for Monday, June 13, starting at 9:30 AM PST. You will be able to watch the show live on GameSpot, while we'll also have a liveblog and of course breakout news stories for everything that gets announced.

Would you be interested in an Xbox One with a 2 TB hard drive? Let us know in the comments below.

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