Production Weekly is a relatively reliable source.
I've been under the assumption that the X-Men are a priority and play a huge role in the Multiverse Saga, just like the Fantastic Four are at Marvel. We were already introduced to a universe where the X-Men exist in The Marvels, and now we're getting even more X-Men characters in Deadpool 3. I believe Avengers 5 will be an AvX film, and the X-Men film will either come out before Avengers 5, between Avengers 5 and Secret Wars, or directly follow Secret Wars like Far From Home did.