User blog comment:Master Sima Yi/Assassinews 05-08-'14 – Assassin's Creed: Rogue announced/@comment-25281081-20140930021259/@comment-4055238-20140930025623

It seems on the up-and-up, but we'll wait for official confirmation. First Unity, now Rogue achievements leaking early...usually they're announced a month before the game comes out.