Whats TMX special ed.'s secret?

[CoOKiE]

With last year's best selling toy, this christmas they're releasing a special edition TMX. Whats differet? He has a necklace, and he sings, and theres a secret...

My question is, does anyone know what this secret is?

 

[frogboy4]

It allows Big Bird more time on the show! Kidding!