I appreciate your approach of avoiding speculation (apart from the mass-production uncertainties) and I've just pre-ordered. I have a couple LCD pen tablets (Samsung Note 10 and Surface Pro 3, apart from a USB Wacom Intuos 3) and a Kobo Aura H₂O, and your device looks like something I'd use often.

Just to give you a little feedback, I don't expect any reply for now:

- if the cloud sync can not be disabled I'll just nuke the packets at the router, but I suspect the option will be there.

- I want the SDK (mentioned as possible in your FAQ), unofficial-void-your-warranty all the way to the moon if you want, to have a programmable scientific calculator (maybe with Computer Algebra System functionality if I find the time) on this device. Having to build a complete firmware image in my laptop (Linux) and flashing it just to install my application is acceptable, simply uploading the file as if it was a PDF is better.