Black Knight Irios said:
2) Peter Schaefer talks about a Goblin Ranger, that is on the PCs side.
Which to me is a great argument for why it is NOT going to be Goblins. In every other situation where someone has played a [mystery race], they very specifically didn't say what it was. I'm pretty sure the Goblin Ranger was a playtest of the MM1-Monsters-as-PC's rules.
Of the OP's suggested races, Minotaur is (by far) my first and favorite choice. I don't think it's likely though.
Orc isn't unreasonable. I'd hate it and not allow it IMC (no, I do not play in Eberron), but I can see them doing it.
Either Shifter or Changeling would be cool and acceptable to me, but I think they're staying Ebberon-only. They're also not big/strong, which is missing right now; nor are they fierce. I rate it unlikely.
The idea of the Dragonspawn might be interesting. They were mentioned in a playtest though as a monster opponent. That seems odd to me and at odds with all the secrecy.
If they did do a Dragonspawn race though, it would be super duper if you could choose "The Path of Might" (aka, Lizardman) or "The Path of Sorcery" (aka, Mojh).
So, er, I guess it's going to be Orcs. Crud.
Let's hope its something entirely new. I don't want Orcs.