Just a quick topic for anyone that doesn't read the blizz site, (or the news section here!)
US Versions
http://us.battle.net/wow/en/blog/11944163/Save_50_on_Select_Mounts_and_Pets_-12_10_2013
EU Versions
https://eu.battle.net/shop/en/product/category/pets/
You've collected 0 pets