Wooohooo, I'm super happy and excited that you made it!!! Was already losing hope, and now what an awesome surprise! :) Huge congratulations, getting from prototype to shipping is hard, and you know it well enough :) Hope I'll have a chance to dabble with it ASAP!
By the way, have you sent a notification email to your alpha subscribers? I don't seem to have gotten anything in my inbox... only found via HN (just when I was starting to ponder if I should try harder to overcome this addiction...)
Hm, and maybe are you planning some kind of release party or something at your office or somewhere in Kraków? :) Or did you already have one? :)