From what I heard, YES! Respawm studio boss Vince Zampella tweeted saying “6v6 is max player count. Turned out to be the best balance with AI for us.”
Why I believe this number will okay is the AI enemies that players will encounter in the game. Both teams will have AI soldiers that easy cannon fodder for the less skilled as well as the ability to run their Titan as an AI companion in “follow” or “guard” mode. If all 12 players had unmanned Titans there could potentially be a 24 man match. This didn’t manage to damper my excitement for Titanfall and I hope to play it as soon as it comes out!