Previously, AMD CEO Lisa Su already confirmed that we'll see the launch of a higher-end Navi video card later this year. During Bring Up CES 2020 Edition, Su explicitly called this 7nm part "Big Navi", a term commonly used on tech sites and messaging boards to describe the future Navi chip:
Lisa Su: My main message to our fans is this is just a beginning for us in 2020. I’ve heard a little bit through Twitter and Reddit that people are wondering about, you know, Big Navi. I can say you gonna see Big Navi in 2020. There might be few people wondering about Zen 3 as well and I can tell you that Zen 3 is doing really well, we are excited about it. I look forward talking about that later in 2020.
Word on the street is that AMD will announce Big Navi around Computex in June. NVIDIA on the other hand is expected to reveal its next-gen GPUs at GTC 2020 in March. The new NVIDIA chips are expected to offer better energy efficiency as well as a dramatic increase in ray-tracing performance. It's rumored that Big Navi will also support real-time ray tracing.