Why was this major release update pushed to EPEL 7 and marked as security update?

Upgrading from PDNS 3.4.11-4.el7.x86_64 to 4.0.6-2.el7.x86_64 is more then just a security update. This broke our entire PDNS cluster this morning cause config parameters have changed and PDNS wasn't starting anymore. Also the Web API has changed.

We're running yum-cron to apply security patches automatically but this showed us to remove it from all systems. I really appreciate your work guys but this wasn't really cautious.