“When a major new version comes out, we wait about one week and only when no problems are found we start the roll out in steps of about 20% of our user base per week. In practice this means a new release is typically only available in the stable channel after the first minor release. Users can always upgrade sooner by choosing the beta channel, which typically tracks stable releases immediately after publishing.”
You still could play it safe with the switch to the Beta channel. Just switch to the Beta channel and reload the page. There can’t happen anything bad yet.
After reloading the page you should see the Update to NC16 advertised and two buttons:
“Download” and “Open Web updater”.
If you hover over the Download button you should see the address to the file show up (in Firefox down at the bottom on the left).
If it shows this address and file, it is safe to open the web updater:
As you can see in this folder there is only the one NC16 version which was released a few days ago on 2019-04-24.:
Betas and Release-Candidates can be found here:
Please notice the difference:
download. nextcloud. com/server/releases/
download. nextcloud. com/server/prereleases/
So, as long as the download button doesn’t show another link (than releases) and not another version (than nextcloud-16.0.0.zip), you are safe to open the web updater.
In any case, create a backup of your current installation, before you perform an update. It is always good to have the option for a rollback in case something goes wrong.
The guide about how to create backups can be found here: