When does Secret Mountain Fort Awesome return?

Secret Mountain Fort Awesome is an American animated television series. It was created by Peter Browngardt and based on his animated short Uncle Grandpa. The show premiered as a sneak peek on August 1, 2011, and had a formal premiere on September 26, 2011. Designers Robertryan Cory and Chris Tsirgiotis won awards for "Outstanding Individual in Animation" at the 64th Primetime Emmy Awards ceremony. The series last aired on television on February 17, 2012, with the remaining episodes being released on iTunes from March 8 to 29, 2012.