For those wanting a physical version, play-asia has a deluxe edition that from what I can tell, the trailer is in English, and offers Chinese, English and Japanese subtitles. From the article I found, it states:
The game is only going to be available as a digital download in North America but if you prefer to have the physical edition of the game, you may want to pre-order the Child Of Light Deluxe Edition on Play-Asia. This version of the game is the Asian one but it comes with full English language option. As an added bonus this version of the game also comes with a bonus artbook.
Sorry I can't post links yet They have it for $29.99, I ordered one so if you want to wait until I get it to find out, I'll post details once I get it.