The Weekly Shōnen Magazine, which is the one that publishes the weekly mangas of Nanatsu no Taizai, announced that the manga will take a week off. Seven Deadly Sins 309 manga online.

Nanatsu no Taizai 309 - Release Date: May 6
The chapter will be titled "Epilogue 3".
In chapter 308, after the war, the peace returned and everyone is having a good time, but they know that Meliodas will go very soon and although they have tried to pretend that it did not happen they finally get sad.

Elizabet seems to have accepted it and says it's okay, is it probable that she decides to leave with him?