Release Candidate versions are available in remi-test repository for Fedora and Enterprise Linux (RHEL / CentOS) to allow more people to test them. They are available as Software Collections, for a parallel installation, perfect solution for such tests (for x86_64 only), and also as base packages.
RPM of PHP version 7.0.21RC1 are available as SCL in remi-test repository and as base packages in the remi-test repository for Fedora 25 or remi-php70-test repository for Fedora 23-24 and Enterprise Linux.
RPM of PHP version 7.1.7RC1 are available as SCL in remi-test repository and as base packages in the remi-test repository for Fedora 26 or remi-php71-test repository for Fedora 23-25 and Enterprise Linux.
PHP version 5.6 is now in security mode only, so no more RC will be released.
PHP version 7.2 is in development phase, version 7.2.0alpha2 is also available.
Installation : read the Repository configuration and choose your version.
Parallel installation of version 7.0 as Software Collection:
yum --enablerepo=remi-test install php70
Parallel installation of version 7.1 as Software Collection:
yum --enablerepo=remi-test install php71
Update of system version 7.0:
yum --enablerepo=remi-php70,remi-php70-test update php*
Update of system version 7.1:
yum --enablerepo=remi-php71,remi-php71-test update php*
Notice: version 7.1.7RC1 is also available in Fedora rawhide (for QA).
RC version is usually the same as the final version (no change accepted after RC, exception for security fix).
Software Collections (php70, php71)
Base packages (php)