Rewatching the Day to Night footage, I think I can understand why SLinks are called cooperation now. Well, if that running bit with Ryuji is related to Slinks, that is. It seems thst you take an active role in bonding, and you might even have SLink specific missions.
And similarly the jobs system has gotten an overhaul as well. As evidenced by the flora shop segment. You actually have to participate in selling the flora to NPCs, it seems. Kinda reminds me of Shenmue's job system.
Also there is a job at a konbini (convenience store) named 777. I am unsure how to pronounce it though. Is it Seven Hundred and Seventy Seven? Seven Seven Seven? Just "Seven"? Triple Seven? Nana Nana Nana? Nana hyaku nana juu nana? 
Yep. I am thinking waaaay to hard about it.