can you provide a source that the Q400 fleet will be replaced by jets?
This was the vision of the old management, as the ERJ195s were delivered and the ERJ175s were ordered, the feedback from customers was that people found the Q400 unreliable and a bit of a boneshaker, (unfairly). So in come the new shiny jets with a great product, the leased Wideroe DHDs were retired and a half dozen brand new G-FLB* DHDs were sold on after a matter of weeks in flybe colours, whereas several G-PTH* were sold on before delivery.
Key point is that the ER7/9 combo doesn't make nearly enough money in the markets flybe was in. Wingowango is right, there's been a sea change in management with the old gaurd dumped. So out go the medium shiny jets in favour of smaller ones and turboprops the old lot were getting shot of at speed.