With Ultimates 2 not yet finished and Ultimates 3 not even scheduled, who was expecting the announcement of Ultimates 4? Wizard Universe has a preview of the skinny, as writer Jeph Loeb explains:
“It’s not a follow-up [to Ultimates 3]. We use the same model as Superman/Batman in that each artist has their own story with the same writer, and if someone joins the team or dies in Joe’s story [Joe Madureira, artist of U3], it’ll be reflected in [artist of U4] Ed [McGuinness]’s story. But you shouldn’t feel as though you have to read Joe’s story in order to understand Ed’s story. You should be able to hop on, and that’s that. There would be elements and mentions of things, as with any good storytelling, but it wouldn’t be all that different, given the number of characters that we have to service in Ultimates and given who’s going to be on the team.”
Well, glad that’s all cleared up, then.