Bagley's dad posted this instagram video after reports yesterday that Bagley was 6'8
Also, here is another source on the matter
Some of you may have noticed Bagley was introduced as a 6-8 forward this morning and Hield was introduced as a 6-3 guard. That was incorrect. I’m told the roster below includes NBA-certified heights for all players. Bagley is still 6-11. Buddy is still 6-4.