I'm putting my tinfoil hat on
One of the biggest things that intrigued me regarding AC7's 25th anniversary image is the Yuktobanian Su-57 skins in the background.
Why would it have unique Yuke markings at the bottom of the tail, why the low-vis emblem that is seen no where else?
Why a skin that is seen NOWHERE else at any moment? (It's not Ghost squadron's skin, it's the ace skin for the normal Felon, nor is it the 5th Gen Fighter's skin)
Not to say that Yuktobania is gonna be involved in the next game but it's like the single thing that's even a potential teaser