Flybe are sitting on £150million of cash from their recent fund raise so I reckon that both they, and plenty of other very well respected financial institutions that stumped up the cash, think Flybe will be around for many years to come. Let's not forget that this airline has it's foundations back in 1979 and is still here 35yrs later.
In terms of summer sun flights, Flybe have said for some time now that the Embraer 195's are being phased out of the fleet and I've not seen an announcement with regards to whether these have left the fleet or not. Of course it's frustrating (I'd much rather travel on Flybe and the Embraer, than be squashed in 3 abreast on another carrier), but I guess I'd be even more miffed if Flybe were to announce sun flying for next year only to cancel their flights should a buyer come along for the 195's. In the end, I guess we all have an option from another airport so it's down to each of us to decide what we do, not Flybe.