According to Comicbook.com, while speaking at Wizard World Nashville Comic Con, Bruce Campbell confirmed that there will be an Army of Darkness 2 and he will be in it:
“The last one was twenty-two years ago. I just haven’t been racing to do it. Sam Raimi is just a little bit busy making the biggest movies in Hollywood. I used to be busy. Now I’m not. That’s why I’m here.”
He then joked:
“Ash would have to stop occasionally from chasing some deadite to catch his breath. Maybe we could do that, I guess. That would be exciting. Fight in a walker. That would be alright. Hit them with my cane. Fake them out, have a fake heart attack, distract a zombie. I like it.”
Then apparently he got “serious”:
“Alright sir, the answer is yes.”
This has yet to be confirmed, but at this point at least it’s something.