What's the Story Behind The Cane?
One of the first things I noticed when seeing the concept art of “younger Yoda” is that he's still rocking a cane at 700. Hey, no judgment, I get that aging is a slow process amongst these species, so it's possible he needs a cane then just as much as he needed one in the prequel and original trilogies. That said, I am entertaining the theory that Yoda perhaps had a cane for reasons other than old age, like maybe something related to a battle injury? Hopefully, the answer is a bit more exciting than the rather simple explanation that he's still old.