The steering council weighed in that they’d like EXTENSION_SUFFIXES to include both the bare abit3textension and the version with platform tags. Hugo also weighed in as release manager that it’s OK to change this in 3.15.
I don’t yet see a specific PR open implementing what Thomas outlined in the steering council issue. @stefanor, were you planing to take care of that before rc1? Does one of your open PRs already implement it?