Carnival has many more dry-docks planned for the other Fantasy class ships too. While the specifics are not officially released at this time, we know from Carnival that the Carnival Imagination will be sent to dry-dock in September 2016. Both the Carnival Ecstasy and Carnival Sensation will be sent to dry-dock in early 2017. Again, the specifics of these dry-docks are not announced yet and there is always a chance the dry-dock will only consist of general maintenance. However, given the Carnival Fantasy and Carnival Inspiration's new features, there is a good chance all three of ships with scheduled dry-docks will receive something new too.
The recent Carnival Inspiration dry-dock and the upcoming Carnival Fantasy dry-dock show Carnival wants to keep its Fantasy class ships up to date, refreshed, and in top notch condition. The future dry-docks of more Fantasy class ships show Carnival is still committed to its Fantasy Class vessels.