Some quite thorough details on the redevelopment of JER are starting to emerge on the airport website (
https://www.jerseyairport.com/future...atestnews.aspx).
It looks like a new lounge is part of the plans - the existing lounge will likely form part of the arrivals area once arrivals and departures are segregated. (
https://www.jerseyairport.com/future...ges/QandA.aspx)
"Q. Will you introduce any VIP lounges or just the existing BA Executive Airline Lounge? If so, where will they be located?
A. We are currently looking at the opportunities available to us. There remains a positive demand from customers and airlines for VIP lounges, so this type of facility has been included in the final design plans."
They have a 3D model of the new second floor which seems to show a lounge at 2 mins 30 (
https://www.youtube.com/watch?v=DBAE...I#action=share)
There's also a suggestion that they might look at fast track security in the future.