Monster Hunter 4 will be releasing in Spring 2013!
Source: http://www.famitsu.c...6/30017305.html
For those who are waiting for English localization better just give up hope and get a JPN 3DS if you really want to play MH...looking at how things are going it will take ages before we see MH being localized...when was the last time we heard from US Capcom branch?