This flavor was released on Sep 1, 2024. I got try it almost as soon as it was released. Ghost has had an amazing track record with the drinks made in partnership with brands. Their generics are whatever, not very interesting, but flavors like the Warheads one blew me away.
As soon I took a sip the first time I thought: Holy shit. This is so good. It is hard to believe that it's sugar-free and stilltastes so much like Welch's Grape juice. Zero percent juice. The citric acid is not overpowering; the fine carbonation, like the carbonation in the Blue Sour Patch Kids flavor, suits this flavor very well. I wouldn't call it sour relative to other flavors they have, but coming from a tamer energy drink it probably tastes still pretty sour.
Highly recommended.