Call it an economical cut and paste job.
Expected to debut next month at the 2019 Detroit Auto Show, the three-row Cadillac XT6 crossover is exactly the type of vehicle GM's luxury brand needs. The CT6 flagship sedan will soon be discontinued not because it was a bad car, but because not enough people were buying them. Instead, they want crossovers, and Cadillac is responding. The XT6 will be larger than both the XT5 and XT4 and ride on the same platform underpinning the XT5 and GMC Acadia. Therefore, it will also share a lot of bits and pieces from its Cadillac sibling.
The dashboard designs will be the same, save for a couple of minor differences. For example, the XT6 will have rotary controls for its infotainment system, though this feature will make its way to the XT5 for 2020. The other difference? That's obvious, a third-row seat. Cadillac just has to stretch the platform. But what's interesting is that the XT6 and XT5 will also share an interior. The former won't adopt some of the new features found on the XT4 and upcoming CT5 sedan.
Put it like this: the XT6 is little more than a stretched XT5. Cadillac went this route because not only was it less expensive, but also significantly faster. Three-row luxury crossovers are very popular these days and Cadillac did not have anything to sell those customers.
What about the Escalade? Well, it's a body on frame SUV. It's not for everybody. One of the reasons why Cadillac fired its now former CEO Johan De Nysschen was due to his failure to accurately predict current market trends. This poor market forecasting essentially forced Cadillac and GM to get something to market as fast as possible. Stretching the XT5 was the obvious and smart choice.