Wolverine Weapons of Armageddon #4 hints at a Sentry Origin Box leading to Armageddon
I've been trying to keep my eyes on the upcoming Armageddon event for a while now, and while Zdarsky's Captain America so far only discusses about post-Doom Latveria and the Red Hulk trying to conquer it, Wolverine Weapons of Armageddon touched topics that I find more interesting, with a whole backstory related to super soldier serums and especially the character of David Colton, who served as Captain America for a while and was now retired. In the last issue, they put their hands on a mysterious box coming from the multiverse holding an incredible power, and Wolverine uses it to save Colton from certain death. We don't see what's in the box, but in a couple of pages later Colton is seen flying away, something he couldn't do earlier, promising to "start saving people again".
We already know that Armageddon is an upcoming big event that's supposed to rearrange some stuff in the current Marvel universe and it's related to Red Hulk putting his hands on some Origin Boxes coming from the Ultimate Universe. In the solicit for Armageddon #2 they say "Red Hulk's tirade across the globe must be stopped! Until a mysterious new hero as powerful as the Sentry appears to level Red Hulk and the Avengers..."
While I doubt Marvel is going to replace our beloved Robert with Colton (especially now that we know Jenkins pitched more stories for him), we are definitely going to see Colton using Sentry-like powers from a serum coming from the Ultimate Universe Origin Box, at least in this story. I really have no idea of how this will go and what Colton's intentions could be, but it turns out we should keep our eyes open for Armageddon.