It's planned just not implemented yet.
One of the reasons was that we couldn't figure out an elegant placement for the remember-me checkbox.
----- Original Message -----
> From: "Rodrigo Sasaki" <email@example.com>
> To: firstname.lastname@example.org
> Sent: Tuesday, 29 July, 2014 12:15:15 PM
> Subject: [keycloak-user] "Remember Me" feature on Social Login
> I know this doesn't exist now, but I was wondering if it is something that is
> planned to be implemented, or if there's a particular reason why it isn't.
> Rodrigo Sasaki
> keycloak-user mailing list