User blog comment:Master Sima Yi/Assassinews 31-03-'15 — Assassin's Creed Chronicles announcement trailer/@comment-89.142.73.82-20150501183959/@comment-4975789-20150502175610

I can imagine Ubi trying to sell Victory as "the surprise of E3 2015", and attempting to create a mega-hype train for the following 5 or so months before it's released. In which case yes, there would be many, many trailers.

Alternatively they just never announce it and it actually doesn't come out this year, leaving anyone who heard about the Kotaku leak utterly perplexed because a) how was it leaked so early and b) why would Ubi forgo money from sales in favour of trying to actually improve the series by giving it a year off?