FlyVPN offers free servers in just about every region, but there are session limits to be mindful of, which means switching to Offline Mode after the game has unlocked as if you revert back to your usual IP mid-game, your in-game status will cease, which breaks Steamworks functionality (Steam wouldn't boot you out of the game mid-session, to be clear). Again, though, the game is currently set to unlock worldwide at 10am PT, so no region is getting it sooner than the rest unless WB has Valve set region-specific unlock times.