I trust GM Authority more than the others. Every time they posted a leak or said "sources say", they was right. So if they write an article saying their sources say it's coming, it's coming.
Just remember the Alpha 2 platform has a wheel base 7 inches longer than the Alpha 1 platform of the 6th gen. The 6th gen is roughly 2 inches shorter than the Zeta of the 5th gen. This should make the 7th gen longer than the 5th.
What do I prefer between the two? Coupe. But I fear it will be a sedan. For over 6 months now it has been known that a new, unnamed V8 sedan will be built at the Lansing Grand River Assembly plant.
Kinda excited to see this and was not expecting this at all. Looking at the known specs, I really hope this isn't the new unnamed V8 sedan that has been known about for the past 6 months or so.