Celestial Steed, Lil' XT now active on the Blizzard Store
The Celestial Steed mount and Lil' XT pet are now active and available for purchase at the Blizzard Store. Both the mount and the pet are account bound, meaning any current and future characters on a single account get them. Use the following links to get to the items now to buy them:
Buy the Celestial Steed mount - $25 in the US or 20 euros in the EU
Buy the Lil' XT pet - $10 in the US or 10 euros in the EU
The mount will operate at whatever level of riding skill you've trained. This includes both ground mounts and flying mounts.
We now also have a blue post on the matter:
For more information, check out the Pet Store FAQ, which holds answers to most common questions: http://us.blizzard.com/support/article.xml?locale=en_US&articleId=29845