Last month there were some additions put into the BRS summer 2020 programme:
Antalya 3 x weekly (new route for easyJet from BRS)
Las Palmas 2 x weekly (previous winter-only route for easyJet at BRS)
Hurghada 1 x weekly (previous winter-only route for easyJet at BRS)
One extra weekly rotation on each of Tenerife South, Zakynthos and Bodrum.
A few weeks ago on another forum a member who seems very well informed on BRS matters judging from his/her track record said the airline was awaiting slot clearance at two new airports for BRS routes. One might be Paris Orly that was put into the booking engine yesterday replacing one of the previous Paris CDG daily rotations.
Marko is correct in saying that there appears to be nothing yet to show that the extra slots acquired by easyJet have been utilised - BRS is only level 3 slot coordinated in summer (BST), and then only between 2300 and 0700 in order to deal with its night time noise quota and movements restrictions.
It seems that in summer 2020 an addtional based aircraft (the 18th) will be required, following the pattern in recent years of adding one aircraft to the base complement each summer. However, as far as can be determined this aircraft is not yet fully used so there might yet be more to come for the summer.