Looking at these times (arrival at OPO 23:25 from EIN), it seems like OPO will be FRs next base.
Also, OPO-BVA will be increased to two-daily. A morning-rotation keeps being done on a W-pattern so far, but an extra daily evening flight is added:
Seeing how the flight times of BVA and EIN / BSL overlap, OPO will probably get 2 aircraft based.
No official press release yet, but routes are for sale at typical Ryanair prices, (less than EUR 40 one-way incl. taxes & surcharges) and are drawn on the map. OPOs dot isn't red yet (meaning a base), though, but this often takes a little longer.