Turning an enemy into a turtle is an important ability every mage should know. I am playing with a new mage who will soon be needing this critical skill. Unfortunately, I don't have the tome to teach it handy.
Before Cataclysm, the tome dropped in the Zul'Gurub, but this raid was removed by the shattering. Happily, there is a blue post (ie from a Blizzard employee) confirming that the tome will still be available somehow. But the post is not even slightly specific about how the tome will be available.
How do I get a Tome of Polymorph: Turtle since Cataclysm?
(I'm watching the auction house in case someone puts up one that dropped from the old source, however that may be gold prohibitive, and will quickly become unreasonable to find. I want to know what the new source is.)