Ducati introduced the V4 engine in their Panigale lineup with the Panigale V4 model in 2018, marking a departure from their previous V-twin engines. Since then, they have expanded their V4 range with various models, including the Panigale V4 R and V4 S.
To stay updated on Ducati's latest announcements and product releases, I recommend visiting their official website or following their official social media channels.