"Is Nvidia ready to reveal its answer to RDNA 2?"
They don't need an answer. Whether people like it or not Nvidia is still at least 2 or more years ahead of AMD. Their Radeon team still can't beat Pascal in both performance and efficiency and those cards are 4 years old.
And not to mention driver problems. HWUnboxed reported loads of people selling their brand new 5700 cards and replacing them with Nvidia's. AMD is losing existing customers instead of getting new ones. That is a completely wrong direction. AMD cards are also pretty much useless for streaming, and any kind of professional work. So they have a lot to work with software and implementation.
I would really like to see AMD competing with Nvidia, but they are still so far away.