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

• php56w 5.6.0RC4
• php55w 5.5.16RC1
• php54w 5.4.32RC1
• nginx16 1.6.1

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

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