where is my download for the new version?

If you have bought the game recently through our website, you can log in to your personal Humble Store page and download the game from your library again. That's how you'll be able to get every new version.
If you have donated for v1 or v2 you should have received a Humble download key by email two weeks ago. If you have not, send me a message at martijn@ramjetanvil.com with your name and the email address used in the paypal donation, and I'll make sure you get your key.