And now they say SSA will be released on October 11th in the US:
http://www.3dsbuzz.com/skyland...er-development/
"suggested currently as October 11th in the USA"
Activision have confirmed everywhere else that it's the 16th, the 'suggested currently' leads me to believe that they were guessing. However, why they wouldn't just look it up I don't know.
Edit: Unless the 3DS version comes out earlier, considering that it was a 3DS website.