I will be starting the upgrade to Mastodon v4.3.0 on Masto.host.
This is a large upgrade and I will need to monitor the infrastructure while it is being deployed. So, it can take a while to reach every instance on Masto.host.
You can expect a couple of minutes of downtime during the upgrade.
Changelog: 
GitHub
Release v4.3.0 · mastodon/mastodon
Upgrade overview
This release contains upgrade notes that deviate from the norm:
‼️ Requires new encryption secrets environment variables
⚠...