There will soon be 3 new destinations to be announced for S19. MAN along with other bases will serve all 3 new destinations.
Any details on this? would be very interesting to see what they have lined up.
Also to throw my hat in the pool, i would imagine around 8-10 B733's would still be in service for 2019. they're all over 30 years old now, but Jet2 don't use them as much as other airlines do(did) so they can afford to keep them longer. Not heard of any major issues lately so i would imagine they're still in good working order, but wait until the season ramps up, then you might get a taste of what old age does.