This will be a four part special episode of Kung Fu Panda: Legends of Awesomeness "The Return of Tai Lung!" where Tai Lung returns to plot his revenge on Po, Shifu and the Furious Five and take over the Valley of Peace along with other villains that Po defeated him and want revenge on him too.

Is Tai Lung still alive?

In Legendary Warriors

Tai Lung out for revenge It was shown that Tai Lung had survived his battle with Po. ... Po, Tigress, Shifu, and Monkey managed to defeat Tai Lung and his allies.

What really happened to Tai Lung?

the wuxi finger hold destroyed Tai lung, in an episode of kung fu panda Po meets Tai Lung's nephew. Po tells him he skadooshed his uncle(TL), which tells that Tai Lung exploded in the end.