I can't find anything 100%, but I know my friend once did get something with a Landro's box thing in it, and she got the spectral tiger from it...unsure if it waas the Cataclysm CE though :x
The only thing I could find so far on the internet was a case of people having issues with the loot card, not what it was.
http://www.wowhead.com/item=54218/la...t-box#comments
"everybody who gets the collectors box gets this one Foil/Holo card
(Along with 59 other cards most of us will "misplace""
One of the comments there...still not sure if it's the cata one though lol.
Another comment I found
"Also contained in the World of Warcraft: Cataclysm Collector's Edition."
So yeah, seems like it is 100% Landro.