I agree that calling it ACIV is probably not a great idea since this is most likely going to be using the ACIII engine again but I am excited for the game. Though I was still hoping to get an ACIII expansion with Conner dealing with the War of 1812 or the French Revolution. Still a pirate game after the awesome ship section and dealing with the privateers and pirates of the West Indies is a really good backdrop in the Americas and should make for an excellent game.