It's out! Finally! With all the pretty fan art people made for us included <3
You can get it now from here:
https://gumroad.com/l/AJbook
You can get it for as low as $0 (just with your email, no need for CC information), so if you don't have money or don't want to pay for it, you can still enjoy it! So don't be shy and download it :D
What we make from the art book will be used towards making more games :)
http://autumn.ishtera.net