Both sets of information come from RealApexLeaks on Twitter. The information about the battle pass seems relatively standard, suggesting rewards including cosmetics, bonus XP, and the potential existence of both a free and premium pass. More interesting, however, are game files that suggest new weapons will be making their way to the game. A file uncovered by the dataminers reference a flamethrower projectile, while another simply says “remoteturret,” while plenty more reference voice lines and actions relating to NPCs rather than player characters.
Those first two files in particular do, at the very least, seem feasible. I can imagine a flamethrower that takes energy ammo, but I can’t imagine it’ll be a particularly effective weapon unless you plan on getting extremely up-close and personal.