Burton's made some weird decisions lately. They decided not to re-sign contracts with some of the best riders around. I don't want to enter in a polemic against Burton, but I have to say that I agree with Jim "JMZ" Zbinden: "Burton has lost it's original core philisophy, now they're only in it for profit, killing the team and projects like Un-Inc is gonna send them to the grave..." Join his facebook group.
The riders no longer on the Global Team are:

Romain De Marchi
DCP
Keir Dillon
Ross Powers
JP Solberg

The riders no longer listed on the Burton team are:

Mason Aguirre
Elena Hight
Mitch Reed
Wyatt Stasinos
Sami Saarenpaa
Hannes Metzler
Morgan Lefaucheur