"Remember when buying a game got you everything? " Respawn does, and God bless them for that. Titanfall 2 releases tomorrow, and according to developers, you won't have to spend additional cash for a season pass. All maps, and game modes will be free.
"No Season Pass required… This means no splitting up the community and it all starts with the legendary Angel City map, remastered from the original Titanfall. This means once you’ve purchased Titanfall 2, your investment includes a full single player campaign, the full multiplayer maps and modes, and long-term support with no hidden costs. You can pre-order the game to play three days early, but it will never cost you extra."
Titanfall 2 blog