She's not gonna leave Columbia, Tersea is her A&R and she's too close with her to leave her. Also, everyone from Def Jam always leave their label they suck. She would sign with that Apple label something more groundbreaking.
On the other hand, Rihanna's follow-up album to "Unapologetic" will still be distributed by Def Jam. This means that her longtime label will still remain in the picture.
Def Jam will also play a role in the marketing, promotion and distribution of Rihanna's music even though she is now officially an artist of Roc Nation.
She's not gonna leave Columbia, Tersea is her A&R and she's too close with her to leave her. Also, everyone from Def Jam always leave their label they suck. She would sign with that Apple label something more groundbreaking.