What's coming up for Serena.. and what is with all the Dan/Blair rumors?

Isn't it great having Gossip Girl back? Life just isn't complete without our weekly Gossip Girl drama. Or our almost-daily Gossip Girl spoilers! Check out these spoilers about what's coming up for Serena and whether or not there's any truth to the Dan-Blair hook-up rumors!
Anna: What is this big Serena/Lily storyline coming up ? Is Serena pregnant?
Sources say: No! Serena's Lily thing will come as a result of Juliet (Katie Cassidy). Also, just sos you knows, I, too, have heard the rumor that Dan and Blair might hook up (scandal!) but haven't been able to confirm one way or the other, so don't freak out just yet. Yet. As for Georgina: I'm told there are no plans for her return yet.