Chris,
There is no longer any distinction between community and affiliate trustees. For reference, see the "Type of seat" column in the current board member table on Meta, as well as the footnote under the table.[1]
What Dariusz has announced here is a new process for determining "community-and-affiliate trustees". This new process is being "implemented on a trial basis for the 2022 election".
I don't think it follows that the Board intends to use this model for the following (2024?) election of the four seats elected last year. Indeed, I am virtually certain they won't, given the significance of the movement governance changes that are going on, and the level of change we have seen in WMF board elections in the last few years.