Maybe they gave up on the Turbulent core as a dud and are trying to revive the Trident line with a new core that truly separates it from Jackal line. Not everyone was a fan of the old Trident line, especially the Abyss and Quest.
This exactly. This is the new Trident core. With the Jackals taking over the Heavy Oil line the Trident has been slotted to the Medium-Heavy line.
and the same cover on the Jackal Flash
The Supra, Ripcord, VIP, Nemesis, Flash and Fatal Venom all use variations on the Infusion cover.