With every update it takes a while for softwares such as Spigot, Paper and forks of it to update and support all the changes. Unfortunately it's not possible to have a set ETA for 1.19 support but you can keep track of updates on SpigotMC.org or on PaperMC's GitHub!
Moving forward the game will use Java's latest release, Java 17.
Create a Minecraft server backup before update
A new version of the game with loads of new content also means potential new exploits and issues.
Before updating be sure to create and test a backup of your entire server. Downgrading a world without causing corruption is near impossible.
Moreover , we would highly suggest you set that up before updating.
Once you update to 1.19 you can't go back to any previous version, unless you reset your worlds or restore a backup that was made when the server was on the previous version.
Updating Minecraft server jar using the Overview tab
Once your desired Minecraft server jar supports 1.19 update, follow these steps:
Make sure you have a full server backup.
Go to the "Overview" section of the server settings and click "Update Server"
Select "Server Type" and click update
Updating Minecraft server jar using Godlike Server Type System - How to update Minecraft server 1.19.2
Once your desired Minecraft server jar supports 1.19 update, follow these steps::
Make sure that your server is backed up completely.
Go to the General Settings section of the Server settings and under the Change Server Type section select needed server type and click on the "Change" button.
Also you can update your server with Version menu under Minecraft management. Then select Server type and needed version. Do note that not all server jars have updated to support 1.19, so 1.19 will not appear on the list until the server jar is updated.
Updating Minecraft server jar Manually
Once your desired Minecraft server jar supports 1.19 update, follow these steps::
Make sure that your server is backed up completely.
Remove your current server jar.
Download the new version of your server software. If you are unsure which one to use, check out our guide on server jars here.
Upload it using SFTP or the File Manager and make sure to define the full name (such as paper-1.19-023 in the 'Startup' tab on the panel)
Changing To Java 17
IMPORTANT
If you are unable to change this next setting please open a ticket on the support Discord. And Godlike staff will need to change this for you.
Firstly you want to go to the Minecraft server control panel and select the server that you want to change the Java version of.
On the left side, select 'Startup Settings'.
Next, find the Docker Image tab (usually on the top right of the page)