As we previously expected, the SDCC 2015 exclusive is essentially the Mexican exclusive Goku with a different box. No details on pricing or what the packaging for the SDCC exclusive will look like, but as those details emerge we’ll post them up for you.
Here’s Tamashii’s official statement:
Complete your Dragon Ball collection with this special variant of Goku as he lands on the Planet Namek! The S.H. Figuarts Goku Frieza Saga version features his iconic outfit with the “Go” GI symbols and original tied belt, as well as a new facial expression not found in the original release! This SDCC exclusive will be available in limited quantities. Figure includes 5 interchangeable faces, multiple hand for different poses, and charging Kamehameha effect part.