Alpine version: 2.1.1 since commit:f9563072 (2015-12-02)
Latest version: 2.1.2 (2015-12-02)

CUPS 2.1.2 fixes an issue in the 2.1.1 source archives which actually contained a current 2.2 snapshot. There are no other changes.

(from redmine: issue id 4918, created on 2015-12-03, closed on 2015-12-15)