Sweet, sweet, this was a great video! Pretty dang awesome for your Youtube debut! You talked about Kingdom Hearts, so that alone makes you awesome!
But seriously though, this was an interesting video, and yes, it does seem heavily likely that Wisdom Form will indeed return in Kingdom Hearts III, given that from what we've seem from the footage, the sliding movement is the same as KHII's Wisdom Form, so that's cool! I guess we'll see what happens further down the road!
By the way, welcome to the site, I hope you enjoy being a member here! Also, you said that you would talk about anime and video games, right? So, if I took a guess, would I be right if I said that the Magtaku part of your Youtube Channel name, the Magnolia part...is that a reference to Magnolia, the city where Fairy Tail resides in!? If that's the case, nice Easter Egg, my man!
Now then, as with all newcomers, my pet bunny here shall devour your soul!