An extra wrinkle is that the selection appearing at Walmart Canada is a mix of the G1 toys which were at first SDCC exclusives and the Prime toys. Megatron, Starscream, Optimus and Soundwave are from the G1 line while Shockwave and Bumblebee are from the Prime (Beast Hunters) line. This information was gathered from a few sigthings and the images below come from fellow Seibertronian Sunstar. This fan already owns the SDCC version and commented on the differences:
Here we have SDCC Starscream on the right hand side and walmart ex on the left hand side. they are absolutely identical - with two exceptions as far as I can tell. The hole in the back from the placement of the label for walmarts and the gold canopy seems more gold on the SDCC than on the Walmart variant (seems more bronze).
This is to see if they're completely new, or leftovers from who knows when.
