A lot of figures have been selling out fast once they start shipping for whatever reason. Hot Toys is leaving a lot money on the table lately.
I'm not saying they will not just that it is highly unlikely with so much on their plate that it's taking 12 to 15 months to get a figure out. They still have a couple more War Machines to make (IW1 and 2), finish the HPP armor line, a updated IM MK1 and make a DC MKVII.
I could maybe see something like a small run retro, stealth or neon paint for con or store opening someplace but a straight up full rerelease i can't see anytime in the next several years (unless it shows up in another movie). Even if they did a variant they might use the MK3, 4 or 5.
I really don't know it is just an opinion.
I'm starting wonder if we will even get a MK4