There are a total of 6 main series of Ace Attorney games that have been released over the years. The first 3 games were released in a collection called Phoenix Wright: Ace Attorney Trilogy. However, the remaining games have yet to be included in their own collection.
Well, that has changed now. Capcom announced in its Capcom Showcase presentation that Apollo Justice: Ace Attorney, Phoenix Wright: Ace Attorney – Dual Destinies, and Phoenix Wright: Ace Attorney – Spirit of Justice will be included in the soon-to-be-available collection.
All these 3 games detail the story of Apollo Justice, so the collection is officially called Ace Attorney: Apollo Justice Trilogy. Capcom will release the collection on PlayStation 4, Xbox One, Nintendo Switch, and PC in early 2024. You can see the official announcement tweet below.