The interior upgrade, which was desperately needed, is definitely going in the right direction, but the engine choice is a bit disappointing. I would be surprised if the car didn't get a V12 with at least one version, but arguably it should have it as base. Their closest competitor, the 812, does have it and it makes 120PS more than the V8 version, while still weighing 100kg++ less - and a new model that still retains the V12 and which will have probably 830-900PS is right around the corner.
With regards to the V8TT, the Valhalla is actually using the flat plane version of the engine, but even just talking about the crossplane variant, it already makes 707PS in the DBX, so I don't quite get why it's less powerful in what's supposed to be their flagship model.