Rumors out of Taipei suggest Nintendo may being mass production of a new model of the Switch in Q1 2020 with a release halfway through the year. This could be the long-rumored Switch Pro, though details are still sparse.
https://www.notebookcheck.net/Nintendo-may-release-Switch-Pro-sometime-in-2020.449494.0.html
AFAIK none of the current upscaling solutions provide noticeable benefits, machine learning makes a difference but again AFAIK the current machine learning solutions that bring tangible improvements can't render in realtime, not to mention they'd require specialized hardware on a mobile platform.
After the time I waited for them to announce no pro model just to make sure I wasn't making a purchase I didn't want and the money spent on just buying my switch over 1000 with all games and everything. I'm throughly dissapointed that a pro will be comming out instead of them waiting for their next gen era. Time to return my consol for store credit. If they will allow it.