You can also use -changelog for packages that are NOT installed with repoquery

Dependencies/Package

First make sure the yum-utils package is installed: 

rpm -qa | grep yum-utils

Installing yum-utils

# yum search yum | grep utils
yum-utils.noarch : Utilities based around the yum package manager

yum install yum-utils.noarch


Example: Package NOT installed 

# yum search php56u | grep ^php56u.x86_64
php56u.x86_64 : PHP scripting language for creating dynamic web sites

# rpm -q php56u.x86_64 --changelog
package php56u.x86_64 is not installed

Using repoquery

# repoquery php56u.x86_64 --changelog | head


Fri Oct 30 2015 Carl George <[email protected]> - 5.6.15-1.ius
Latest upstream
Sync patch6 with Fedora

Fri Oct 02 2015 Carl George <[email protected]> - 5.6.14-1.ius
Latest upstream

Thu Sep 03 2015 Carl George <[email protected]> - 5.6.13-1.ius
Latest upstream
Import latest systzdata patch from Fedora