Comment 4 for bug 1673443

Here's what we have in the snap store today:

Track Arch Channel Version Revision
2.3 amd64 stable 2.3.8 55
                  candidate ^ ^
                  beta ^ ^
                  edge ^ ^
3.0 amd64 stable 3.0.17 57
                  candidate ^ ^
                  beta ^ ^
                  edge ^ ^
3.1 amd64 stable 3.1.8 62
                  candidate ^ ^
                  beta ^ ^
                  edge 3.1+master 53
3.2 amd64 stable - -
                  candidate 3.2.0-rc.1 61
                  beta 3.2.0-rc.1 61
                  edge 3.2.0-rc.1-29-gb003734 60
         ppc64el stable - -
                  candidate 3.2.0-rc.1 63
                  beta 3.2.0-rc.1 63
                  edge ^ ^

I intend to add arm64 snaps soon, as arm64 bins are already provided by upstream. I'll also add s390x once upstream begins to provide those. There's an issue open for that here: https://github.com/coreos/etcd/issues/7978