The latest photos posted by Supra93 also looks like it has functional vents.
https://www.supramkv.com/threads/most-revealing-2019-supra-prototype-spy-pics-yet-spotted-3-19-18.803/page-37
That could be the case for markets like the EU due to the tax displacement rate, emissions, and etc. But I think the majority sold in the US will be the straight six version.
To those that were on the fence about the badge, do you still feel the same way? Personally I think it looks a lot better than what was shown on the NASCAR Supra.