User blog comment:Master Sima Yi/Assassinews 05-08-'14 – Assassin's Creed: Rogue announced/@comment-153.107.97.167-20140807005104/@comment-1379990-20140807100841

It's also a matter of preference. Some do want the Naval Warfare to continue, while I'm glad it's not part of Unity. It was nice in ACIII and I loved it in Black Flag. But I'm actually glad it's not in Unity. That's one of the reasons I think I'll prefer Unity over Rogue.