Ok maybe there is some truth in it, found this, someone cleared the twitter image, it matches up...
That was only here I believe and not in Japan, and 7-11 over there does collabs...just never knew they did more than gundam before.
The deco on the magnus is a big lacking though, I get its meant to be more magnus than a straight up 7-11 deco job but could green bands across the arms would of been nice