Mark IV = Mark 4 (Halo Wars)
Mark V = Mark 5 (Halo 1)
Mark VI = Mark 6 (Halo 2 and 3)
My guess is either Mark 4 or 5, Seeing as Mark 1-3 needed a large power source connected. Mark 4 and higher were the only ones that could move freely.
They probably won't bring a new permutation, and If they did it would be in a game based after Halo 3.
-Stig
Also. I'm aware of the "Spartan prototype armor".
But that is from the Anime. So I have no plans of taking this into consideration. As most of the stories are complete BS. We saw a 5 minute clip and already noticed a HUGE mistake.
EDIT: Outlawwolf117. We know as much as you do, If Bungie had revealed what type of shooter it would be, the whole world would be talking about it, and you'd probably know by now.
My guess is that Bungie will stick to being original, keep classic with FPS.
However they might want to...
1) Show of the spartan so you see more of them.
2) Add a "Adrenaline" mode, Allowing the spartan to run incredibly fast, and use aerobics/gymnastics in combat. (As seen in the Halo Wars scene: Monsters, and the anime clip: Babysitter.)
3) Giving your team-mates orders, and just generally being stealthy and tactical.
Personally the 2nd option was an idea of my own, but I would love to see it, As they state how the Spartans are capable of incredible movement, aerobics, and jumping heights over 2 metres high, quite alot. However seeing as all the games are FPS's You don't really get the chance to experience it as your focus is keeping distance and shooting.
Anyway to the point, As much as I hated Gears of War gameplay. I really enjoyed the Dead Space game, even thought it was a Third person. Either way, I'd be happy with an FPS or a Third person. Just for those little perks and bonuses we could have.