It looks like Star Wars Rebels season one will be released on September 1st 2015. You can pre-order a copy right here on Amazon.com for only $41.39 with free S&H!
Star Wars Rebels Season One On Blu-ray And DVD September 1, 2015
The Cast And Crew Of Star Wars Rebels Discuss The Return Of Darth Vader
Star Wars Rebels Special One-Hour Movie Event This Saturday!