A European retailer has listed Dragon Age 3: Inquisition for the Xbox One. The listing has since been removed, but the brief error does provide the possibility of a new platform for BioWare's next game in the series.
The listing was found on Amazon Italy (via All Games Beta). The European Amazon sites have been especially leaky regarding EA lately. Two separate ones (Germany and Italy) made pre-order pages for Mirror's Edge 2 (though EA's own site hasn't helped). This listing is a bit different, since Dragon Age 3 has been announced since last year. Still, it seems to out a new platform, and points to some kind of impending announcement at E3.
EA and BioWare have been mostly quiet regarding Inquisition, but dropped a few tidbits after its announcement last year. You'll be a human character with customization more similar to Origins, and you can take control of castles. It's also said to be significantly larger than any previous BioWare games.