New spoiler about Kristen.

Len: Any Serena scoop? #gossipgirl
Just because Serena has taken over for Gossip Girl for the time being, do not expect any voiceovers from her. "It's always Kristen Bell. She is the voice of Gossip Girl," Josh Safran promises. "We believe she's not the person of Gossip Girl, but whoever is actually typing as Gossip Girl, you'll always hear Kristen Bell."