Via friend site Cybertron.ca we can report that the Transformers Studio Series Wave 3 & 4 Core are out at Canadian retail.
Studio Series Core Wheelie and Rumble were found at Georgetown WalMart in Ontario by Cybertron.ca member evenstaves.
cant never find rumble dang it wally mart
Slight correction, it is not wave 3 and wave 4, it is just one wave. I am unsure which, but it is the wave that includes Laserbeak, Wheelie and Rumble. Having 2 separate waves would mean finding Ratchet as well but that is not being reported on Cybertron.ca.
Transformers Studio Series Wave 3 & 4 Core Out In Canada