Cause the prologue was sent out today, and I evidently missed some stuff when reading it in the past. And am now in a RIOT over the implication that one of the three subspecies of Hobbits have at least one Dwarven ancestor ('Stoors' that came to the Shire straight from Dwarven lands, are a little taller, stockier, sometimes wear shoes, are capable of growing beards, and highest tendency to live underground) and another subspecies have at least one Elvish or Dunedain ancestor ('Fallohides' who came to the shire through Rivendell and Arnor, even taller, slimmer, and fairer, like to live in the woods, like to go on adventures, only Hobbits not [as] scared of the sea, most focused on the arts, best leaders and best hunters [Tooks and Brandybucks included among them])
Like he never outright says it, cause obviously it would be out of character for any Hobbit to openly even speculate of such, but the implication is right there and is very clear...