Just couple day ago a update version of the demo/trial has just been released from official website http://www.typemoon.com/products/mahoyo/index.html go to special page to download it.
now some people on Russian forum has translate the trial version to english download HERE
btw you must remember that this game is
1) The characters will not be voiced, just like Fate Stay Night and Tsukihime.
2) There are no choices. no routes. just one linear story
So download it and unleash the power of TM’s newest work! Follow the skilled magician “Blue” aka Aozaki Touko’s sister through her adventures.