This whole leak situation looks more like some sort of viral marketing to me. Maybe Nintendo is trying to warm people up to the name "Switch 2" as well as the fact that its form factor and overall concept is very close to the Switch 1 (which, IMHO, is a really good thing) before a more substantial reveal that focuses more of the internal changes like upscaling, improved joycons with new functionality as well as the launch window games that come with it.
There is one more strategic component to all of it: by deliberately leaking bits of information about the Switch 2, they also warm up all the news sites around the world, putting their editors in a state of high alert. So, when the actual reveal happens, they've successfully alerted the most amount of internet news "journalists" within a certain short time frame and therefore generated the most internet buzz, which will be especially useful if they really do plan on launching the Switch 2 sometime in the next 3 months (which in itself is a pretty short time frame to fully launch a new console).