The dev said (on Steam) that there will be a discount when it releases there. I believe it will be slightly less that $20 for the weekend at least. Maybe longer.
Tpday. Noon-ish depending on your time zone. Relax and enjoy it when it gets here!
Hmm. Someone on Steam said the hotkey for construction remains active. I haven't tried it yet, but the dev said they're looking into the issue.
Problem with the tutorial: When you're first directed to click the construction button it remains unclickable, as does every button on screen except for the menu button on the upper left part of the screen.