I am afraid not soon if you ask me. We are getting memory reductions on animations, allegedly because of older consoles not being able to keep up with the all the things that developers want to add.
So increasing the furnishing limit on a notable house may not work at all, while the older gen consoles are still supported. Maybe game engine also becomes unstable after certain amount of objects are stored in the instance. That part i am just guessing.

"I love the ideas. Housing is one of my favorite parts of ESO, and we want housing to feel more alive, too. We're looking at increasing housing limits right now actually. It's a surprisingly large technical hurdle for us, but we're hoping to make improvements to give you more freedom in how you decorate your homes."
they did actually talk about working on Furnishing Limits in the recent Reddit "ask us anything" post.
here's the link:
https://www.reddit.com/r/elderscrollsonline/s/RfIeVPspCd
"I love the ideas. Housing is one of my favorite parts of ESO, and we want housing to feel more alive, too. We're looking at increasing housing limits right now actually. It's a surprisingly large technical hurdle for us, but we're hoping to make improvements to give you more freedom in how you decorate your homes."