Regarding the Eurowings flights I dont think there will be any new routes as it was meant to be a direct replacement but I wouldnt rule a replacement flight out entirely. Also some news regarding rumours :
United have ended their Hamburg service on B767-300 maybe Newark will change to this from the 757.
Flybe are intersted in starting new routes but are currently unhappy with management at Edinburgh.
Westjet also have a spare 767 to utilise and this may be on the rumoured Edinburgh flight.
Air Canada also rumoured to be starting a year round service on MAX8 but very unlikely in the near future.
Best regars.