With plot details being kept a closely guarded secret for now, all we know for sure about Deadpool 3 so far is that it will be set within the MCU continuity and be rated R just like its predecessors, as opposed to being squeezed into PG-13 confines like every other MCU movie thus far. Along with an exact filming date not being set in stone just yet, it’s also worth remembering that the MCU film slate is scheduled through to May 5, 2023 right now. July 28, October 6 and November 10, 2023 remain open, but with movies like Blade, Captain America 4 and Fantastic Four also in development, it’s hard to say if Deadpool 3 will score one of those 2023 release slots or if we’ll have to wait until 2024 for it.
Source: Cinema Blend