It seems increasingly likely that the new core set will be exclusive to Target stores in the US on Force Friday.
reasons:
1. all the leaks so far have come from Target stores.
2. some Target employees have unofficially confirmed they have it, should be $39.99 US.
3. no other retail chains claim to have it, in many cases they havent heard of it.
TL;DR all available evidence says Target only for Sept 4.