Yeah the shape is different. I am guessing now that GM have done this so they have covered all bases this year, as they have bats with:
the high middle and no concaving (the flare)
the high middle and concaving (the icon)
the low middle and concaving (the hero)
the low middle and no concaving (the apex).
A very clever move in my eyes. Im glad you are pleased with the bat mate, the GM service is very good and I know the feeling about new bats, itching to have a go with them, but if you have a net with it, people dont pay as much. I found this out the hard way!