Disney's movie "Frozen" will be released on DVD and Blu-ray on 18 March 2014 but will not be in 3D in all locations.
Disney is not currently releasing a 3D version of this in the United States but only a 2D version.
The 3D version is available, though, outside the United States. The 3D version can be pre-ordered now from the Amazon.co.uk store, for example, and the web page says it is a "region free" disc, which means it should be playable in all regions.
DVDs are coded by distribution region so that a disc purchased in say, Asia, cannot be played in North America. Unless they code it as region free, in which case it can be played worldwide.