Meridian is cPanel's goal-based interface introduced with cPanel & WHM version 138. Jupiter remains a supported cPanel interface and is not replaced by Meridian.
cPanel's newer AI experiences are centered on Meridian. For example, the AI Assistant is a Meridian feature, and Nova can appear as a website-building choice in Meridian Guided Setup when enabled.
Switching themes
If theme switching is allowed for the account, Meridian provides a way to return to Jupiter, and Account Preferences can expose theme selection. Theme availability is controlled by the server configuration.
Switching themes changes the interface used to manage the same cPanel account. It does not by itself enable a feature that the account's package or feature list does not include.
