At its upfront in May, the CW announced that The Carrie Diaries will succeed departing Gossip Girl in the Monday 9 PM slot in midseason. Now the network has tweaked its plans, setting the Sex And The City prequel series for a January 14 premiere at 8 PM. The newbie will swap slots with veteran 90210, which will slide to 9 PM. I hear that the rationale behind the decision is that, like fall breakout Arrow, Carrie Diaries will be supported by a big marketing push, which may make it a better 8 PM anchor just like Arrow is on Wednesdays, lifting veteran Supernatural with it. A sneak peak from The Carrie Diaries will be featured during the December 17 two-hour series finale of Gossip Girl.