firstly Angel is right the one in the trailer looks like the Mark-6 probable reason being: the Mark 6 is cooler. second i was under the impression that there was no Spartan 1.0 program it would have made sence(probably spelt that wrong) if by Spartan 1.0 they meant the ancient Greek Spartans and also there is no mention (so far) of the Spartan 1.0 program in the books. thirdly the game designers can do anything they want with the Spartan's armor but in the game it will make NO difference what-so-ever because its an RTS the units arn't in that much detail (for now).Why worry about thearmor? you should be worrying about the gameplay BECAUSE ITS A GAME!!!!

ps. this subject has gone on WAY too long