AMD desktop CPUs to support DDR5 and USB4 in 2022?

Gamers Nexus received a leak that AMD's most recent roadmap (which is of course subject to frequent change) lists DDR5 as a new feature to support in 2022. This implies Zen 4 will be the first AMD chip to support the new memory standard, as well as the Zen 3+ based APUs. USB4 is also listed for 2022.

All of those disclaimers out of the way, we ask that you not overly sensationalize this news and just keep it to the facts: The roadmap we received, which we are unable to share as it is likely marked to find leakers, indicates that 2022 is the year that AMD is intending to get DDR5 into its premium desktop lineup. The 2022 platform will retain PCIe4 and will likely be a Zen4 product, also intended to feature native USB4 support. The APUs for that year also presently have DDR5 on the roadmap and are listed as Zen3+ parts. The mobile roadmap has DDR5 LP5 on-board for 2022 in the premium and gaming lines.

According to previously revealed details from SK Hynix, the DDR5 standard will have a frequency of 3200Mbps to 8400Mbps, with production starting at 4800Mbps. Besides higher memory density, another key difference with DDR4 will be the adoption of on-die ECC (error correcting code). For the first time, this expensive feature will not be exclusive to the server market.