The following packages are in testing, and available for download in the testing repositories:

• mysql 5.5.55-1 (el6 only)
• nginx1w 1.12.0 (el7 only)
• php56w-pecl-mongodb 1.2.8-1
• php56w-pecl-redis 3.1.2-1
• php56w-pecl-xdebug 2.5.3-1
• php70w-pecl-apcu 5.1.8-1
• php70w-pecl-memcached 3.0.3-1
• php70w-pecl-mongodb 1.2.8-1
• php70w-pecl-redis 3.1.2-1
• php70w-pecl-xdebug 2.5.3-1
• php71w-pecl-apcu 5.1.8-1
• php71w-pecl-memcached 3.0.3-1
• php71w-pecl-mongodb 1.2.8-1
• php71w-pecl-redis 3.1.2-1
• php71w-pecl-xdebug 2.5.3-1

Assuming you have the Webtatic repositories set up (see Yum Repository), you can update using:

yum update <package> --enablerepo=webtatic-testing