Changing levels in PS, seem chapter numbers to me.
Drawings in the background: Alibaba, Ja'far, Pipirika(?), Sinbad and Kou's woman because of hands position. So they are last chapter characters... that woman could be Arbakuei (?)
Re: Magi 287 Spoiler Discussion
The new emperor doesn't necessarily have to be a Ren's family member. Someone Alibaba has missed... It could be Olba, Toto, etc.
I think that Arba is now a power behind the throne, she wants to be Hakuei any longer.
Re: Magi 282 Spoiler Discussion
There are an official image with the magi's boys ages, i think Hakuren and Sinbad had the same age.
And we can see Gyokuen's reaction here (165th night)
so i think her was possesed before Hakuren's birth.