Now confirmed. will operate on Mondays and Fridays from 11th December 2020:
Mon:
LTN-GIB Dep. 13:40 Arr. 17:50
GIB-LTN Dep. 18:10 Arr. 20:00
Fri:
LTN-GIB Dep. 16:00 Arr. 19:50
GIB-LTN Dep. 20:30 Arr. 22:20
(I still need to find out the flight numbers) 
Surprising to see another route to Luton but I Guess EasyJet haven't kept up the frequency compared to what Monarch had plus with EasyJet not running the route during the peak summer season.