The Magic's jersey numbers were updated on nba.com/magic to reflect the new players that have been added to the team. I'll post each one below as well as some notable players who have worn the Magic number in the past.
Serge Ibaka - 7
Notable 7s in Magic history:
J.J. Redick
Gordan Giricek
Ben Gordon
Ersan Ilyasova
Bismack Biyombo - 11
Notable 11s in Magic history:
Sam Vincent
Glen "Big Baby" Davis
Courtney Lee
Jacque Vaughn
Devyn Marble
D.J. Augustin - 14
Notable 14s in Magic history:
Jameer Nelson
Anthony Bowie
Jason Smith
Jodie Meeks - 20
Notable 20s in Magic history:
Mickael Pietrus
Brian Shaw
DeQuan Jones
C.J. Wilcox - 23
Notable 23s in Magic history:
Jason Richardson
Mario Hezonja
Stephen Zimmerman - 33
Notable 33s in Magic history:
Grant Hill
Ryan Anderson
Terry Catledge
Jeff Green - 34
Notable 34s in Magic history:
The Legendary Greg Kite
Brian Cook
Travis Diener
Willie Green
You might notice that there's something strange about C.J. Wilcox's number - namely, that it was Hezonja's number last year. It seems that Hezonja has switched his jersey number to match his FC Barcelona number now that Channing Frye has been traded away from the team. So try to keep that in mind when you start watching games next season.
Mario Hezonja - 8
Notable 8s in Magic history:
Pat Garrity
Channing Frye
Anthony Johnson