D.C.4 ~Da Capo 4~ Fortunate Departures first launched for PC on February 26, 2021 in Japan.

The announcement of D.C.4 ~Da Capo 4~ Fortunate Departures for PlayStation 4 and Switch is one of several D.C. 20th anniversary announcements. The others include:

• D.C.III ~Da Capo III~ is coming to console. (Specific platforms not announced.)
• A new theater version of D.C.III ~Da Capo III~ is in production.
• D.C.5 ~Da Capo 5~ is in development. A teaser site will open on July 29.

Here the D.C.4 ~Da Capo 4~ Fortunate Departures story introduction, via its official website:

A little time has passed since the love story that changed the world…

The season is fall. Kagami Academy is getting ready for the annual school fall festival “Kagasai.”

Protagonist Ichito Tokisaka is living a fulfilling school life with close friends Suginami and Kanata, as well as his beloved girlfriend he began dating around spring.

Kagasai is Kagami Academy’s largest festival, consisting of a field day, cultural festival, and evening festival. With your festival-loving friends, classmates, and girlfriend, Kagasai will be a fun, radiant, and unforgettable experience.

While it is still too early in the season for snow, the story of two lovers will be told once again on Kagami Island, where AI fairies dancing in white light produce an atmosphere of romance.

Visit the teaser website for the PlayStation 4 and Switch versions here.