Aurelion Sol has more than Three Stars?

Check out this video. At first, I just wanted to see how the star dragon might play on URF mode, and since it was the PBE, I always expect bugs and such.

When Aurelion reached level 6, a fourth star appeared. I thought it was a bug, and would revert itself when he spawned after death. When he did died later on to Jarvan, he respawned with four stars again.

I assumed that since it was something that came at level 6, that it was intentional, and maybe something that the PBE was testing currently. I skipped in the video until Aurelion was level 11, since that was the logical step. I figured, "If it was intentional, the surely another star will come at 11 and 16."

Boy was I wrong. However, a fifth star spawned once Aurelion got to level 13, and at that point, he looked like he was getting crowded.

If anyone has any information on this, I'd love to hear it. I would want to report this if it's a bug, but it it's not, then I want to know why Aurelion is getting a change like that when he's supposed to be getting nerfed. Either way, I figured others might find this interesting.

BTW; Aurelion Sol on URF doesn't seem that fantastic.

EDIT: He reaches level 6 at 5;59, and level 13 at 14:02. Hope this helps a bit.