Ken Smell sent this in.

The second DLC Pack for WWE WrestleFest for the iOS was released thirty days after the release of Pack 1 as promised. You will not see the pack unless you upgrade to WrestleFest version1.0.3 through the app store. Once you do, you will be able to purchase Alberto Del Rio, The Miz, Sgt. Slaughter, Yokozuna, Zack Ryder, and the Wrestlemania 27 arena.

I have screen shots and detailed information regarding the pack updates and a section where people can ask game related questions at: http://www.kensmellsgood.com/2012/03/wwe-wrestlefest-dlc-packs.html