Dang they should've added one options to the kickstarter.
Well, I assume the reason they didn't is because the one model will require more R&D time. Presumably the zero was intended to be a cut down model they could easily bring to market to gauge interest (Which isn't so easy now that we're getting bluetooth and NFC!)
Here on the diagram it's saying 30 days (which is awesome) - https://flipperzero.one/zero
But on the same diagram on kickstater it's saying 7 days only... -https://www.kickstarter.com/projects/flipper-devices/flipper...
I'm really into this device but the https://flipperzero.one/one looks so more promising and having a raspberry inside open a whole new world of possibilities, mainly on wifi.