Update: Ubisoft issued a statement after this apparent earlier "confirmation" by Gerighty.
"Julian was obviously joking as Julian likes to do. It looks like our creative directors are having fun right now. We do not have any announcements to make at this time."
... ha?
If you still somehow doubt it, Jason Schreier also confirmed that it was just a joke.
Original: Julian Gerighty is a Creative Director at Ubisoft that has helped to create and bring games like The Division 2 and the Splinter Cell games to the world. He also just, uh, kind of announced that they're working on a new Splinter Cell game. This big announcement came via Twitter.
I mean, it's been rumored for a while now that a new Splinter Cell game was in development, but there has been nothing official. Ubisoft has not yet officially announced the game. We know absolutely zero details about it. The only thing we know right now is that it's being worked on.
Also needed Michael Ironside, but i'd understand if they want to move away from the Sam Fisher character, unless they go back to his younger years, dude deserves to retire.
Personally speaking: That was one stupid fucking "joke."
Not sure if this counts as a sign that they're not making a new SC, as it's been rumored for so long it almost HAS to be in some kind of development.