Monster Hunter Generations is coming west.
Monster Hunter X had to have a name change because we can't be trusted to say "cross" instead of "ecks" or "ten".
The western release hasn't been dated, unfortunately; Nintendo only gave us a vague "summer" window for the 3DS RPG. It released in Japan in November last year, so this is quite a rapid turn around for Capcom and Nintendo.
If you have a Monster Hunter 4 Ultimate save, you'll unlock bonus content in Monster Hunter Generations. To facilitate this, Nintendo of America has discounted Monster Hunter 4 Ultimate on the eShop for 48 hours.
Below you'll find the announcement trailer and another video showing off the Fire Emblem costume you can unlock, as well as another couple of screenshots.