CUPS 2.1.0 is now available from:
https://www.cups.org/software.html
CUPS 2.1.0 offers improved support for IPP Everywhere, adds support for advanced logging using journald on Linux and ASL on OS X, and includes new security features for encrypted printing and reduced network visibility in the default configuration. A detailed list of changes can be found in the change log included in the download.
Enjoy!