The following matches have been confirmed for WrestleMania 29 on April 7th.
WWE Championship [link]
The Rock (c) vs. John Cena
World Heavyweight Championship
Alberto del Rio (c) vs. Jack Swagger
The Undertaker vs. CM Punk [link]
Triple H vs. Brock Lesnar [link]
-No Holds Barred
-Triple H’s career on the line
WWE Tag Team Championship
Team Hell No (c) vs. Dolph Ziggler & Big E. Langston [link]
Ryback vs. Mark Henry [link]
The Shield vs. Big Show, Randy Orton & Sheamus
Wade Barrett is also expected to defend the Intercontinental Championship against the Miz in one final match, and WWE has been teasing an altercation between Chris Jericho, and the as of yet un-debuted WWE Superstar Fandango. The newly returned Bella Twins have had some contact with Divas Champion Kaitlyn in recent weeks, and may have a match in some capacity at WrestleMania as well.
That would bring the match card to a total of ten, keeping in mind a likely pre-show match featured on YouTube and WWE.com.