I'm sorry this is a bit late, but the game was released a few days ago around the world! It's available everywhere now from NIS's official site and eBay if you still want a shot at the Limited Edition. Try to get your hands on the WiiU version with the original Wii game packaged with it: Naka himself stated that he wanted people to play the Wii edition more than any others. However, the 3DS version will be packaged with a soundtrack, if you can find a copy and want that as well. Alternatively, the full soundtrack is on iTunes for purchase for $12-- completely worth it for the music this game has!
Now, it's not like a journal for Rodea the Sky Soldier can be written without addressing the reviews it's been getting lately: Nintendo Life rated it 6/10 and there's similar scores across the board for the WiiU and 3DS versions of the game. Admittedly, it's understandable from a gameplay standpoint, but don't let the reviews of a game discourage you if you enjoy it!
Buy from the official NIS siteBrowse on eBayOfficial game site