The official word from NBC also includes the announcement of new cast members, but not a list of returning ones.
From NBC: NBC’s “Saturday Night Live” kicks off its 36th season on September 25 with Amy Poehler returning to studio 8H and musical guest Katy Perry. Making their debut on the SNL stage, Vanessa Bayer, Paul Brittain, Taran Killam, and Jay Pharoah will join the cast as featured players. . . .
Vanessa Bayer joins the cast of SNL from iO Chicago, The Annoyance, and The Second City. Paul Brittain is a veteran of the iO Theater in Chicago where he performed as a member with numerous improv and sketch groups. Taran Killam hails from Los Angeles, where he established his comedy career as a main company member of The Groundlings, performing with numerous improv and sketch groups, and also appearing in The Groundlings’ Sunday company. Originally from Virginia, Jay Pharoah honed his performing skills in community theater and at local comedy clubs.