Carrier update "ATT 14.2" on iPhone 4S. What are the details?

Recently my AT&T iPhone 4S received a carrier update to version "AT&T 14.1". [You can see what your version is when you click on SETTINGS, then GENERAL, then click ABOUT...scroll down and look for "Carrier".] Version 14.1 brought the amber, weather and goverment alerts. See link: http://blogs.att.net/consumerblog/story/a7790136

But today, when my phone was connected to iTunes, it said I have a carrier update and asked me if I wanted to update and install. I did that. But I did not understand what the details were. When I clicked on "Learn more"...I was brought to a link that did not help me. Link: http://support.apple.com/kb/HT1970

When I contacted AT&T, they told me to contact Apple. When I called Apple, they told me to contact AT&T. Then they did not know what I was talking about.

Anyone know details about the update? Thanks in advance!

I have the latest iOS for iPhone 4S (version 6.1.3) and I am using the latest version of iTunes for my MacBook Pro (11.0.4 (4)).