What to make of Giannis Antetokounmpo

Leading up to Milwaukee's preseason opener, all the talk regarding their high-ceiling rookie first-rounder Giannis Antetokounmpo was that the swingman might be 2-3 years away from having any impact in the league. Then he went out and played 29 minutes as a fill-in for the injured Ersan Ilyasova and absolutely filled the scoresheet: 14 points, 4 rebounds, 2 assists, 2 steals, 3 blocks, 5 turnovers and 1 3-pointer. To sum up the general reaction after the game: 18-year-olds from Greece that look like 15-years-olds aren't supposed to play like that. Is there actually a chance Antetokounmpo could parlay a big preseason into a role in the rotation as a rookie?