Got it, played it, finished it, and reviewed it for Pockett.net
(check it out if you can read french).
The english version of the game is not finished yet (it ends after the 5th day), but on the chinese version of the official Dingoo site you can grab the complete chinese version where you can play the 6th and 7th days and see the real ending.
It was released last year
You want proof? Here's proof:
(sorry for quality, these were taken with my awful camera phone)
It's all in chinese but if I could finish it without knowing any sinograms, I don't see why you couldn't.
Just remember two things:
1) the gamesaves of the complete chinese version are not compatible with the ones of the incomplete english version, so you will have to replay all the game from the beginning in chinese. You better remember which key goes where, where to get the right items and where to go.
2) don't forget to set the Dingoo language to chinese, otherwise launching the game will freeze your Dingoo.
Just download it and have fun