Fairphone Open 17.12.1 has been released. You can get it through the
updater, or by download from Fairphone Open downloads.
The installation images for switching between Fairphone Open and
Fairphone OS have been overhauled, switching between the releases is
now done using manual installation images that use fastboot.
Security fixes
Android public security bulletin for December (patch level December 1 2017):
CVE-2015-3868, CVE-2017-0807, CVE-2017-0837, CVE-2017-0870,
CVE-2017-0873, CVE-2017-0874, CVE-2017-0879, CVE-2017-13148,
CVE-2017-13149, CVE-2017-13150, CVE-2017-13151, CVE-2017-13152,
CVE-2017-13154, CVE-2017-13156, CVE-2017-13157, CVE-2017-13158,
CVE-2017-13159, CVE-2017-13163, CVE-2017-13165, CVE-2017-15868
[Edit @AnotherElk: 17.12.1 in first sentence instead of 17.11.2]