Both versions are stable but Linux distributions mostly contain 1.5 (CentOS 7.3 for example)
I think about compiling haproxy from source and providing RPMs for the servers I administer using [this][1] approach. I understand why distros with longterm support tend to support older versions of packages.
So I try to find the middle way between being on the bleeding edge when compiling haproxy on my own and having support and automatic updates through the package manager. haproxy 1.5 will be the next release that moves to "critical updates only", that made me think I better jump to a current release.
When I decide to use haproxy 1.5 and either make the automatic shift to 1.6 (or whatever other version) as soon as RHEL/CentOS decides to move: what will be the steps needed to migrate ? Is this just some minor modifications in the config file ? Or are there some "breaking" changes to be expected ?