No, I'm operating on the notion that if evolution is an ongoing process, then changes should take place. We humans have changed since then, right? But then, maybe I'm forgetting the fact that if all niches are filled, the evolutionary process will slow down or even stop. Hmmmm, I don't know, maybe there were mutated ancestors even then, humans just didn't elect to draw them....
We humans have NOT changed in 30K years. We are the cro-magnons. A bit taller, perhaps, but very much the same species. Why? Because nothing has wiped us out. We produce mutations all the time (webbed fingers, six fingers, dwarves, etc.) but there has been no reason for such mutants to survive while we go extinct, so we stay the same. The mutant genes remain as part of our gene pool, popping up from time to time, but the "standard" of our species predominates, and the appearance of a "typical" human remains more or less constant. Same with horses. The theory of evolution doesn't REQUIRE change. It EXPLAINS change.