User blog comment:Master Sima Yi/Assassinews 25-03-'13 — Assassin's Creed IV: Black Flag gameplay trailer/@comment-31.205.65.28-20130328023621/@comment-3046679-20130330170234

The "next game" is ACIV - the very ACIV discussed here, which is about a -pirate Assassin-. Not times of First Civilization. And Shaun didn't "confirm" anything, he just expressed interest in that time period.