As far as we knew, Kokuga would be coming westward to the 3DS "sometime this summer," but apparently that day is actually tomorrow! Yep, the North and South American release date is set for June 27th, 2013, with a June/July estimate for Europe and Australia. The listing confirms 1-4 player support of some fashion (reportedly local with download play).
It seems like a pretty bizarre game (in a good way), with limited bullet restrictions and card based mechanics. It also looks like the game will launch at a premium price of $14.99, so you may want to check out some impressions first! As a huge fan of Ikaruga, I'll be getting it for sure.