Mists of Pandaria Beta - Alani Killed and Looted! Confirmed as the new TLPD/Aeonaxx
After many days of grinding on the beta I finally collected 10x Skyshards and combined them into 1x Sky Crystal. This crystal allowed me to remove Alani's Nimbus Shroud immunity buff in order to attack him. When killed he dropped Reins of the Thundering Ruby Cloud Serpent. This pretty much confirms Alani to be the MoP version of the TLPD/Aeonaxx.