3DS will be released in Japan on the 26th of Febuary 2011. A month later, the English release. This is on March 2011. The exact date is unknown. Plus, a new 3DS game is coming out. It is called Battle & Get. It is aimed at a younger audiance and will teach romanization for Japanese to English. You are a charecter walking along a path capturing pokemon. As you type in the letters in English, the pokemon becomes captured. It is going to be released in Japan in 2011 like the 3DS, and it will probaly not be released anywhere else. Gen V will be in it.
