I would be coutious about shouting this route from the roof tops as it hasn't been released officialy yet.
I am guessing that the return of the IBZ is based solely on a 3rd aircraft being based at CWL. The reason for this is that all summer routes 2010 performed quite well and would imagine that they will return again in S11 at the same frequencies. This would mean that with MUC x 3 Weekly and IBZ x 2 Weekly we are likely to see a 3rd aircraft along with another new route or with only 2 based aircraft a cull of existing routes.