The Mattel panel from Power-Con was posted. We have a much clearer looks at these. I'll just post the look at New Eternia. I didn't notice and somehow missed it, but even the shoulder pads will be removable, so you really can make these guys pretty bare (the basic He-Man and Skeletor looks). This is also probably our closest and best looks at the alt heads.
https://www.youtube.com/watch?v=C4q0_KwizRo&ab_channel=PowerConOfficial