During the annual shareholder meeting, AMD confirmed that Navi architecture will be deployed in the third quarter.

AMD Navi in Q3 2019

AMD Ryzen 3000 desktop series, which are based on 7nm Zen2 architecture, will be available in the third quarter. The same applies to 7nm NAVI architecture, which is more likely to replace Polaris in the current stack.

The fact that Radeon VII is listed alongside Navi only confirms that Navi will not compete in the upper high-end segment.

AMD:

In gaming, we successfully returned to the high-end market with the launch of our Radeon™ VII GPU in February 2019 and we are on track to introduce our next-generation “Navi” GPUs for the mainstream market later this year.

What this means is that during Computex and E3 press conferences we might be seeing product announcements and demos, but products itself won’t be available till at least July.