Prior to the presentation of the AMD Navi generation, a presentation slide has been leaked. This shows a picture and technical data of a Radeon RX 5700 XT.
AMD announced that it will also be talking about raytracing at E3 2019. It is possible that the new Radeon Navi generation already supports the technology.
According to a leak, the RTX 2070 Ti should have 2,560 CUDA cores and 1,770 MHz clock rate. Whether it has anything to do with Nvidia Super is unknown.
AMD has confirmed that there is no PCIe 4.0 for old motherboards. In the run-up there were hints that X470 and B450 with Ryzen 3000-CPU can handle PCIe 4.0.
Ryzen 5 3600 and 3600X come with six cores and launch with their brothers. Also compatibility information of Ryzen 3000 on older motherboards is available.