It seems we will be waiting a bit longer for the Gwent closed beta. The date has been moved to October 25th, 2016. Here’s the official information:
At E3 we announced that we’d launch the Closed Beta of GWENT: The Witcher Card Game in September. Unfortunately, we feel we need some extra time with the game before we hand it off to you for testing. We know we can make a first impression only once, and want to be sure everything is ready before we blast off. Delivering a good game is more important to us than keeping a deadline. Still, that doesn’t mean we don’t realize that delays can be disappointing, and we apologize for making you wait. Closed Beta will now begin on October 25th.
The GWENT Team