Sumo Digital has announced a November 18, 2014 release date for LittleBigPlanet 3 on both PlayStation 3 and PS4. Levels created in the prior games will be compatible (and look better on PS4) and there are new characters to play as beyond the series' iconic Sackboy.
With such an extensive line of costumes available for LittleBigPlanet over the years, there's naturally going to be several pre-order options for LBP 3. My favorite is Amazon's PlayStation Favorites Costume Pack with Patapon, Journey, and Tearaway costumes. Simply adorable. The PlayStation Blog has a rundown of what's available where.
Months later, I still find that new quadruped character OddSock unsettling.
LittleBigPlanet 3: Pre-orders Announced! (Plushies, DLC, and PS3 – Oh My!) [PlayStation Blog]