While according to Mozilla the source code will be published, and according to news websites the code was in fact published on https://github.com/Pocket, I can't find the backend code anywhere at all.
So the service indeed is non-free at the moment.
This is not a freedom issue (by our definition), since it does not involve installing non-free software locally.
Reuse to track the _privacy_ issue in promoting Pocket.
jonas.smedegaard renamed this task from gnome-initial-setup - includes plugin needing nonfree service Pocket to gnome-initial-setup - includes plugin needing privacy-leaking service Pocket.Jan 28 2019, 07:41