Two Nintendo 3DS titles have been delayed until early next year - Luigi's Mansion: Dark Moon and Castlevania: Lords of Shadow.
Both titles were confirmed by publishers Nintendo and Konami to see a release next year instead of whipping up a frenzy of ghouls and vampires this fall. Reasons for the delay weren't specified, but it would likely be to refine the experience and perhaps stagger key releases across the beginning of a new year.
There are a handful of titles still due this side of 2013 - including Art Academy: Lessons for Everyone!, Professor Layton and the Miracle Mask and Paper Mario: Sticker Star.