According to a comment from planet on their Indiegogo-page for the Gemini there will be another firmware update for the Gemini:
https://www.indiegogo.com/projects/gemini-p...ce--2#/comments
(It is given as a response to a comment from Alex S., which is more or less on the top of the comments page at the time of writing this.)
So it seems they haven't completely abandoned the Gemini yet!!
Well, I am not holding my breath. It seems Planet did not totally understand the process with updates for Androids. I understand they got better with the Cosmo, and I hope the latest one will not have an issue, the the Gemini has gotten like two(?) updates since I got mine from the original Kickstarter. I really like mine, and I use it almost daily (not my daily driver phone, but I do use it a lot), but I am going to have to abandon Android on it before long due to the lack of updates on that side.
The good news is I understand that the Linux and Sailfish ROMs have gotten most of the bugs worked out and are good solid choices.
