Late 2019 16" came out less than 2 months ago.
The next upgrade would be as early as August 2020 to November 2020 for a mid 2020 or late 2020 release possibly with an iPhone chip.
Or AMD-based.
www.digitaltrends.com
The next upgrade would be as early as August 2020 to November 2020 for a mid 2020 or late 2020 release possibly with an iPhone chip.

What will Apple’s ARM iMac look like?
Apple’s current iMac design is showing its age. Big bezels, a hard drive, and Intel chips. What might a brand-new ARM-based iMac look like?
www.cultofmac.com

NVIDIA: Macs Will Run On ARM Processors Within Five Years
The iPad has already killed netbooks, and now it's starting to do the same to laptops. Within five years, the iPad might even kill off the Mac, says
www.cultofmac.com
Or AMD-based.

Here’s why a MacBook Pro with AMD’s new Ryzen 4 chips would be amazing
Ever since it switched from PowerPC chips, Apple has stuck with Intel processors in its Macs. But at CES 2020, AMD showed why it’s time for Apple to finally make the switch and drop Intel’s delay-prone CPUs for good. With the Ryzen 4000-series chips, the MacBook Pro 13 could reach new heights.

Oh boy, this is the last thing I want to read after getting the 16".
Don't want another update in 3 months.