I will be starting the upgrade to v2.8.0 for all instances hosted in Masto.host
There should be under 1 minute of downtime.
v2.8.0 brings a lot of changes, you can read about it here: https://blog.joinmastodon.org/2019/04/mastodon-2.8/
Or the changelog: https://github.com/tootsuite/mastodon/releases/tag/v2.8.0