I would peg that as unlikely for a couple of reasons. The first is that external devices like monitors and other peripherals seldom get updates. Many don't even have a user accessible update method so I'm not sure if that display does.
The other reason is that the sub-sampling is due to a bandwidth limitation. Trying to increase available bandwidth after a product goes to market is difficult to do right. You have to drive hardware in ways it likely wasn't tested and customers aren't very understanding of that difficulty.
But, anything is possible. A few years back ASUS had a deal for people to send specific non-gsync laptops in and have g-sync added. Unfortunately it didn't go well so I don't know if ASUS will ever do anything like that again.
A bus station is where a bus stops. A train station is where a train stops. On my desk, I have a work station…