Good to see Dubrovnik back. It opperated very successfully with JAT, Adria and Aviogenex many years ago on Charters to the old Yugoslavia including Split and Pula for Yugotours and Airways.
The Pula and Dubrovnik flights were very popular and if my memory serves me correctly 3 or 4 times weekly to both destinations.
I dont think the Jet 2 to Split was available via Jet 2 Hols which seemed strange however the new Dubrovnik one is. I am positive it will be popular.