This is kind of what I was expecting from him in the summer league. He already has mastery in one of the most important skills in the modern game (i.e., shooting from deep) and it's evident he can demonstrate it on all levels. I have no doubt that he can bomb threes at will, but it will be interesting to see how everything is impacted when he has increased expectations on the defensive end and has to be more mindful as a distributor.
I think he had two drives where he bumped his man off the dribble, stepped back, and drilled 18 foot jumpers above the foul line - it's nice to see that, despite his small stature, he can use his quickness and strength to create enough space to free up his shooting hand. He has a quick release, too, which will go a long way in compensating for his lack of height. Good stuff.