... but Kaunas will stay their main base and keep STN and DUB. Good. About VNO frequencies, from what I can see in an article on delphi.lt:
STN: Daily, DUB, BGY and CIA: 3 pw, GRO: 2pw
Source:
The odd thing in all this is that UK and Spanish economies are struggling, Germany doing very well and on 1st May finally lifting all EU workers restrictions also for LT people. But FR still bets on UK and Spain. Let's see. E.g. LH had a third rotation planned for VNO-FRA, and knowing them, they might still set it up. 4U unfortunately has mostly retreated from Eastern Europe.