GLA as generally been referred to as 'year round' in the various press releases and I doubt MAN would be any different especially given teh connections available. If they want to make a proper go of the 'city' routes (AMS, DUB, CDG) then they will most likely be served during the winter. On top of those I would guess JER would continue at as lesser frequency (5 weekly or so) and we may see the odd ski route at the weekends. (CMF, SZG and GNB are all unserved from BOH).
It is promising to hear that many of the routes are selling well though!