The demo for Kingdom Hearts 3D [Dream Drop Distance] is now available through the Nintendo eShop.
From Square Enix
The Kingdom Hearts 3D [Dream Drop Distance] demo takes place in Traverse Town, where Sora meets Neku from the popular DS title THE WORLD ENDS WITH YOU. Players will also encounter creatures new to the series called Dream Eaters, who are split into two categories: Spirits (allies) and Nightmares (enemies). Sora is able to recruit Spirits like Meow Wow and Tama Sheep as allies and link with them to perform powerful combo attacks to defeat enemy Dream Eaters and a colossal Nightmare beast. The demo also gives players the opportunity to try new gameplay features like "Flowmotion" and "Reality Shift."
About Kingdom Hearts 3D [Dream Drop Distance] In preparation for an impending threat, Sora and Riku enter the Sleeping Worlds to complete the Mark of Mastery exam. They will encounter new enemies and make new friends in worlds they have never set foot in, and if successful in their quest, they will become true Keyblade Masters.