https://wccftech.com/16-inch-macbook-pro-can-drive-two-6k-two-5k-four-4k-or-one-5k-three-4k-displays-at-the-same-time/

The new 16-inch MacBook Pro is a beast when it comes to video output and can drive multiple 6K, 5K and 4K monitors at the same time.

If you were planning on buying the new MacBook Pro and wondering how many external monitors you can hook up with this, then the obvious answer is a lot. According to Apple’s own support document, you can hook up multiple 6K, 5K or 4K monitors, that too in different configurations without the notebook ever breaking a sweat.