That information is from september 2019, a time where S22 was not expected to come out half a year later.
I am still not sure how the idea of a R22 version as the coming version came into existence, but it has been made rather clear that there will be half yearly subscription releases and yearly perpetual releases. Since version numbers are always increasing this means the logical next release will have 23 as a number and will be released as subscription and perpetual, where, as Dave pointed out many times, holders of perpetual licenses can expect upgrade prices to be in the same price range as previous perpetual upgrades.
Cheers
Björn