Quoted from mattosborn:
Let's hope those rumors are unfounded. That would be a big mistake.
There is no reason to think Dirty Donny would be involved in an Iron Maiden project. He has not done any of their work. Also his style is not a Maiden style.
It is also unlikely Derek Riggs would be involved in any original Iron Maiden art as he has not worked with Maiden in ages. They may be able to use previous images on the game, which there are many to choose from, but new work would be doubtful.