As far as I am aware HLX have no plans to return to the Cologne and Munich routes for summer 06. Both routes had good loads but I have no idea what the yields were like. I would hope that some other operator might pick them up in due course.
Don't pin too many hopes on FLYJET, their punctuality record for Summer 05 was worse than Excel.( No.8 out of 8..excel was No.7)