I don't know, Bungie has always had an affinity for that number. If a raid does come though, with what does it involve? Skolas' story was wrapped with HoW so unless it's the Kings it can't be the fallen. We just had hive and have the taken coming which is primarily hive so it won't be them. HIGHLY doubtful that it'll be vex. That leaves cabal, which would be a throwaway raid just to make the community happen because they don't fit into anything that's currently going on. If anything is going to happen, it won't be announced until that day though. Big surprise from bungie. I see them adding another tier of difficulty for VoG and CE, that'd be cool. Maybe have the rewards be 365 versions of all the weapons/armor and have etheric light a drop possibility from the chests. New emblem/ shader for completion. Again, merely a guess but that'd be cool with me. Not too concerned with a new raid just because literally unless it's the fallen house of kings, it won't make any sense at all.

The Nine maybe?? They play pretty big roles & are mentioned a lot in this expansion...

We still don't know enough about them to wage a full fledged war on them. And considering xur refers to exotics as junk that the 9 doesn't want, I'd say they're probably exponentially more powerful than guardians

True... I duhno... I thought the queens bro would be somewhere in this expansion (since he was in video clips back near release) but he isn't... So maybe still Fallen based fade but he is involved somehow...