CD Projekt Red, developer of The Witcher franchise, has filed a trademark for Gwent: The Witcher Card Game. Though it's relatively self-explanatory, Gwent is a card game within the world of The Witcher 3: Wild Hunt and is a hugely popular aspect of the game. The trademark doesn't say exactly what this will be, but speculation suggests that it's a standalone version of Gwent that will likely be announced at E3. CD Projekt Red has previously said that they may be revealing something new at E3, and they currently have an unannounced game that they plan to release this year. It certainly seems that this unannounced game is Gwent: The Witcher Card Game, but until CD Projekt Red makes an official announcement, nothing can be confirmed.