New images have been revealed, thanks to a listing from Amazon.co.uk, for the upcoming Stealth Game Grips for Xbox One. You can find the photos below this paragraph.
The product is due for release on the 30th of January in the U.K. The package includes two game grips in addition to four thumb grips. Stealth has not yet announced any plans for a U.S. release. So you may have to go the import route if you are interested.