Kevin Feige confirmed with Collider that Deadpool is fully coming to the MCU with his full mouth. The first Deadpool movie was a huge success with it’s R Rating. This continued with Deadpool 2. Some thought Disney might water down the merc with a mouth (aka Deadpool) and make him less offense and PG 13. It appears Disney and the MCU are just fine with Deadpool as he is.
Feige stated they are working on the script with Ryan Reynolds. Lizzie Molyneux-Loeglin and Wendy Molyneux have the primary writing responsibilities. Filming isn’t expected until 2022 at the earliest.
This is exciting news for Deadpool fans.