Thanks for the warning, BHX2FRA.
They know they shut-down those routes, so I guess don't care anymore about pax. I have two bookings with them, one next week BHX-DUS, which should be fine, but also a BHX-FRA end-Aug. They haven't yet contacted me about this, and accessing it via my FlyBe.com account gives me an access error. So if someone from FlyBe sees this post, please be aware some folks are already waiting for alternative offers (free transfer to BHX-DUS, I hope).