In the latest episode of Game of Thrones, Hodor returned. We didn't just see him as the man who carries Bran around. In a vision shown to Bran by the Three-Eyed Raven, we see him a young boy in Winterfell.
It was not a big part of the episode, really just to introduce us back to Bran, but it was a nice thing to see. In the vision, he could still talk and he's referred to as Wylis. This is not only news to the audience but also Bran.
Could we possibly see more of Hodor's origin this season? The Three-Eyed Raven might show Bran some other things that could show us how Wylis' vocabulary went from that of a normal person to just "Hodor"