After more than a year of work libfprint 1.0 has just been released!
It contains a lot of bug fixes for a number of different drivers, which would make it better for any stable or unstable release of your OS.
There was a small ABI break between versions 0.8.1 and 0.8.2, which means that any dependency (really just fprintd) will need to be recompiled. And it's good seeing as we also have a new fprintd release which also fixes a number of bugs.
Benjamin Berg will take over maintenance and development of libfprint with the goal of having a version 2 in the coming months that supports more types of fingerprint readers that cannot be supported with the current API.
From my side, the next step will be some much needed modernisation for fprintd, both in terms of code as well as in the way it interacts with users.