Promotional video to celebrate the first anniversary of the arrival of the AMD Ryzen to the market, has been used to talk about Zen 5, the processors that will arrive in 2021 and will be based on the 5nm manufacturing process.
AMD's jump in the processor segment, thanks to the AMD Ryzen, has been very important and significant. The company, thanks to the Zen architecture, has been able to develop quality processors, capable of competing in quality / price with Intel, although a push is still needed for this architecture to compete in pure performance. The company's Roadmap states that this year we will see Zen + in 12nm, or what is the same, the Ryzen 2000 series, which will be released on April 19. In 2019 we will see Zen 2 at 7nm and in 2020 we will see Zen 3 at 7nm +.
AMD goes one step further and would already be developing a new architecture, called Zen 5, which would be based on the 5nm manufacturing process and would not reach the market until 2021. Theoretically, these new processors should arrive with a new socket Since the current AM4 socket, it would end its way with Zen 3. We imagine that for 5nm, they will have to remodel the socket completely.
This information has been given by the company itself, who in a promotional video about Ryzen's arrival on the market, have commented that they are working on Zen 5 architecture. The idea of skipping number 4 would come from the bad luck, which gives this word in Anglo-Saxon speech and is that this number is homophone of the word death and they have preferred to skip it.
The truth is that the company, in the processor market, has stood up and faced Intel, face to face, we cannot say the same in the graphics card market. Vega is a resounding failure in performance, temperature, sales, consumption and others, so much so that the company will launch the RX 500X Series, to fill the market and try to hold the next NVIDIA challenge and get all the benefit they can from the market of cryptocurrency mining.
Source: VZ

Robert. The 4 in Chinese is reminiscent of another Chinese word that means death. In Anglo-Saxon = English there is no problem saying 4.
The president of AMD is of Chinese origin and its biggest market too.
Contrast before writing, I have told you on several occasions.