Nintendo have announced that they will be handling the sales, marking and distribution of Kingdom Hearts 3D [Dream Drop Distance] in Europe, Australia and New Zealand. This was revealed in a press release from Nintendo, seen via Nintendo Life. Thanks to CardCaptorDeadpool from KH13 for the tip.
Update: Square Enix Europe have announced that, due to their earlier decision to not translate Kingdom Hearts 3D into Spanish, Nintendo Ibérica (Nintendo of Spain) have decided not to distribute the game. Instead, the game will be available through select retailers in Spain (in English language). They released the following statement:
We understand that there has been huge disappointment from fans in Spain, as well as other European countries. We completely understand this and we are sorry that we have not been able to fully satisfy all the fans needs for this version of the game.