CentOS Errata and Enhancement Advisory 2015:0717 

Upstream details at : https://rhn.redhat.com/errata/RHEA-2015-0717.html

The following updated files have been uploaded and are currently 
syncing to the mirrors: ( sha256sum Filename ) 

x86_64:
818c1d17d5adb9ab3d6757430050e8070e06e2af4ee54a1d8bdfb0cb460722ee  tzdata-2015b-1.el7.noarch.rpm
71e6f2749ec0de934123278410f5df6209a4190d6e11081b47704930818abed5  tzdata-java-2015b-1.el7.noarch.rpm

Source:
8ec69e7d73b7f0cd4cbef055142adf3c5098070bfdb2720e7c6a94614c66ab63  tzdata-2015b-1.el7.src.rpm