Blatant speculation and some wishful thinking from me:
The bio for Adam was not included in the Orko 2 pack, this opens up for another Adam. The Adam in the 2 pack was "grown up", since MOTUC bios touch different timelines there should be no problem including a teen Adam, in fact it kind of makes sense. "Before Adam became He-man, before learning how to combine the two swords of power, Adam with his Electro-sword.... something something dark side"
It makes sense to me that they will make this figure at one point - But for now with nothing being mentioned about it except from us fans, we can only hope.