I don't think they will to respin the hardware unless a serious fault is found, the product is too low volume and if there's a minor fault they'll probably just hot wire the PCB instead unless they really have to replan the PCB or something because of timing issues causing stability problems for components with previously unseen tolerance variations.
Watching all the CES videos, Janko is quite candid in his answers to questions but there are still a few gaps to be filled. I've read in the following:
1. Mobile cell network testing is ongoing. This will be to make the phone networks in the various territories comfortable with the device I think.
2. Devices will be shipping with software in late beta state. The adaptation of Android is not 100% complete and will improve with updates. GPU hardware acceleration only partially implemented. Oreo some months away, even if GPU drivers are now available.
3. Device will not ship with dual boot linux, it will be Android only. The Debian will be available as a web download for owners to flash in themselves.
4. Linux OS on Gemini is a rough implementation and a long way behind Android. Of course that won't bother the enthusiasts who will enjoy hacking it around. Janko and Planet would be very happy to accept help from the open source community.
5. Hardware production partner is invested in the project, so Planet have not had to fully commit financially to production tooling. This is good as even $1million is not much money to get this type of project in production. This may apply to the final product or the keyboard maker or both (I believe they are two different manufacturers). Think about 2500 crowdfunded units, the vast majority of keyboards will be for US and EU territories, but those supported markets where there were maybe 10 or 20 backers, imagine have to make just a few special keyboards for each of those. I would hope there is a bespoking process but would still expect it to be expensive.
6. HDMI output is custom mode. This may allow Planet to control accessory sales like Apple try to, although Janko said that the cable adapter is not expensive.
HDMI out is clone screen, not dual expanded desktop.
I do believe that the product will take off on general sale and may have been held back a bit by IndieGogo and risks perceived with putting money into backing projects - there are enough stories of projects failing or being eternally delayed. The future of Planet making these things and a version 2 will depend on it. Psion sold over a million units.