In Search of the Unknown | Episode 8 "The Obelisk" | D&D 5E 

(Jeff/Skeggi here) Our version of Keep is pure 2014 PHB, plus Tasha and Xanathar, as most (all?) of Bob's D&D campaigns have been. He'll be running Vecna in 2014 also, to close out the decade of original 5e with his version of Avengers: Endgame. That will run well into 2025, and will involve characters from most (all?) of his 5e campaigns, shuffled around into new groups--watch the "post-credits scene" of this episode for a hint of how that will start out. As for the future, Bob says he's not sure yet which system(s) he'll be running D&D in--2014 5e, 2024 5e, or both. I *suspect* that if/when the Charcoalition returns, post-Vecna, we will probably continue in 2014 5e, since our characters are pretty advanced by now, and that's their native system. I don't think we want to rebuild the characters at 8th or 9th level. Personally, I'd rather NOT switch to 2024 rules at all, mostly because I don't care for the way WotC is steering D&D onto their proprietary website and VTT, but that's purely my opinion. I don't know where Bob will stand on that in 2025.

@pISSUMTREE Jeff summed it up pretty well. I don't know about older games switching to the new edition. If new games use it, I'd cross that bridge next yr. We may have some smaller one shots with it in the meantime.

@chrisfromlongisland803 thanks Chris! I think that's the cool part. Everyone's favorites making returns! No spoilers here but tomorrow is gonna be fun