Version 2.24 is currently in {xenial,yakkety,zesty}-proposed and needs SRU verification.
The relevant SRU bug: https://bugs.launchpad.net/ubuntu/+source/snapd/+bug/1681799
The automatic checks done by britney:
- http://people.canonical.com/~ubuntu-archive/proposed-migration/trusty/update_excuses.html#snapd
- http://people.canonical.com/~ubuntu-archive/proposed-migration/xenial/update_excuses.html#snapd
- http://people.canonical.com/~ubuntu-archive/proposed-migration/yakkety/update_excuses.html#snapd
- http://people.canonical.com/~ubuntu-archive/proposed-migration/zesty/update_excuses.html#snapd
Once the manual verification is done we can move forward and ask the SRU/release team to copy it to updates.