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 ) 

i386:
2b56f79674b637d07220a872a862ed34f89b7cfe02b91f5487e50d7bf1b46f96  tzdata-2015b-1.el6.noarch.rpm
a5abe97c2a8b9f09950ad7a13eb2bc54a986e5c10203deddc3418ff6feb7fd9b  tzdata-java-2015b-1.el6.noarch.rpm

x86_64:
2b56f79674b637d07220a872a862ed34f89b7cfe02b91f5487e50d7bf1b46f96  tzdata-2015b-1.el6.noarch.rpm
a5abe97c2a8b9f09950ad7a13eb2bc54a986e5c10203deddc3418ff6feb7fd9b  tzdata-java-2015b-1.el6.noarch.rpm

Source:
10a3adc13941bc7730692e5aef82e1304dd874d1ac855592da7f73c0dcc6a5e2  tzdata-2015b-1.el6.src.rpm