User blog comment:Master Sima Yi/Assassinews 05-08-'14 – Assassin's Creed: Rogue announced/@comment-86.61.1.141-20140809071021/@comment-5174994-20140810185201

Not he will "turn Templar", but moreso that he was never truely on their side. If anything he will just start his own group with Elise.