It does sound a lot like what happens after all that Ethereal tech and meld hit the civilian market.
I guess the "we are still watching" being one of the hacked messages means that XCOM will be an underground resistance group. Could ADVENT be a Cult of Sirus equivalent or EXALT with another name, especially since the EXALT leader is not captured/killed during the raid on their headquarters.
This seems more and more like Apocalypse+NewCOM...
The hackers emphasize abductions, and are "still watching". ADVENT literally calls the process "Gene Therapy".
And this image really looks like a NewCOM map, with plenty of convenient cover blocks:
https://downloads.2kgames.com/adventfuture/images/en/ADVENT-CityCenters03.jpgThe humanoid figures look weird, too. The T-poses might be because it's a pre-release screenshot. But their clothing/armor looks a lot like XCOM's bulky style.
And this picture actually emphasizes a set of strange, clone-like figures in the background. Possibly bald. Too blurry to tell if they're wearing the ADVENT symbol on their torsos, or if it's a ribcage-like armor... Seems really familiar but I'm not sure from where.
https://downloads.2kgames.com/adventfuture/images/en/ADVENT-Prosper.gifThey could be Apocalypse-style hybrids, perhaps due to meld.
Also, I really really want it to be Apocalypse+Newcom