I will believe ED IV is coming out when it's on the screen in front of me. I think ED IV is a real possibility, in time. But, I don't think a fifth installment will ever get made. Raimi and Campbell would be in wheelchairs by the time the script would be 1/2 done. And, that's if they live to be 100.

Needless to say, when/if it does happens, it's going to grab the whole horror world by the balls.