Big changes are coming to Marvel comics, The legacy numbering coming back, the comic event starting it all off called Legacy but this change is about Marvel's flagship comic The Avengers.
Starting beginning of January of 2018 the comics Avengers, Uncanny Avengers and U.S.Avengers will merge into one unified Avengers comic that will ship weekly.
This happens to also be a way to kick off a new 12-part crossover event called "No Surrender", image above is for Avengers: No Surrender, art by Alex Ross.
No big reveals on this event except for a tease that butler Jarvis will make his return and the villain the living lightning, who's going by Lightning now. More will probably be revealed once Legacy finally starts. Stay tuned for more Nerd News.