It's FINALLY happening. Deadpool 3 is officially moving forward.
Ryan Reynolds has called on the Molyneux Sisters (Bob's Burgers) for writing duties.
Other reports suggest that, in typical Deadpool fashion, the film will be titled Deadpool: Retcon, and will be under the 20th Century Pictures banner to avoid an R-rated film being produced under the Disney name.
So I guess it's time to start speculating. Personally I hope they use the film (particularly Cable time travel) to pick what bits they want to retain from the FoX-Men (Dafne Keen's X-23, Evan Peters' Quicksilver, etc.) as sort of a mini-Exiles.