The 2020 Initial Co-ordination Report has been published by ACL.
If I read it correctly it shows no S20 FlyBosnia, no Air Serbia or Smartwings. In fact, the only operators are EasyJet, WizzAir, Ryanair, Blue Air, Level/Vueling, Sun Express, TUI, El Al, Freebird, DHL and MNG.
From the initial schedule, there are reduced ATMs by DHL, El Al, TUI and Vueling.
The ridiculous and bureaucratic passenger cap is obviously taking its toll across the board. In the peak week only 10 airlines will operate (Putting EZY/EJU together, WZZ/WUK together and Level/Anisec/Vueling together).