Maggsie, I answered Lotus above:
Lotus, the "preorders" as of now was the Kickstarter they had to help fund it. I am sure we'll have more news as it gets closer.
It may be that backers get it first and then it will come to retail.
When I hear more, I will post and let you know.
Update: The game will be available for preorders approximately a month before release. The game is scheduled for release before the end of the year and details will be posted at that time.
Ana