We can’t get everyone to agree on the definition of a console “generation” or “revision”. Switching being a mobile device only blurs it further. What is definite, however, is the market segment that a consumer product can occupy based on its price point. So I’d suggest that we consider Drake’s product positioning through that lens.
Based on the Nvidia leak, most seem to agree that the Drake model will fall in the $400-$450 bracket (or even higher for more memory). If true, it obviously cannot replace any of the existing models at $200/$300/$350, except a small chance of replacing the OLED Model as the only premium option in the product lineup.
Following that logic, the existing hybrid and Lite models need to live on for a few more years until new products of similar price points are introduced to replace them—those new models will be the true “Switch 2” or “Lite 2”. Being a higher-priced enthusiast product, the Drake SKU is very unlikely to be marketed as a new standard model.
Whether that makes Drake a pro, revision, or next-gen, it’s for the enthusiasts to debate. For the mass market consumers, they only need to know that Nintendo is not obsoleting their $200-$300 devices, and they can continue enjoying their Mario games just fine.