Hi herbst - thanks for the note. No immediate release dates for that but we are focused on offering straightforward integration solutions that cover as many of the payment methods we support as possible.
All i wanted to hear, i really love your service and checkout.js is so easy to integrate. When i go for the other options as well i could almost roll my own with the same amount of time (not really, but you get the point). It would be really awesome to see at least PayPal and maybe Bitcoin in the available options for the checkout.