According to GameSpot, a Nintendo representative told them that the new 3DS would be region locked. Unlike Sony and Microsoft, Nintendo has region locked all of their home consoles. Nintendo did not region lock any models of the Gameboy, or the original DS and DS Lite. However, Nintendo started region locking with the DSi, and has continued this trend with the 3DS.
Nintendo president Satoru Iwata stated last year in defense of region locking "There are many different regions around the world, and each region has its own cultural acceptance and legal restrictions, as well as different age ratings. There are always things that we're required to do in each different region, which may go counter to the idea that players around the world want the freedom to play whatever they want."
A good example of a game which is impacted by these region locking policies is Shin Megami Tensei 4, which was released in North America on July 16th, 2013, yet still isn't released in Europe.
The New 3DS is an upcoming iteration of Nintendo's 3DS hardware line, which includes improved 3DS, an additional analog stick, two additional shoulder buttons, built in compatibility for amiibo figurines, and improved hardware.