Abstract
The recent experimental confirmation of a large reactor mixing angle makes a careful revision of flavour models necessary. Many models are actually ruled out by this observation and the popular bimaximal and tri-bimaximal mixing patterns are challenged. We will present here two possible scenarios with a large Θ 13 . First, corrections from the charged lepton sector might modify the (tri-)bimaximal mixing pattern to generate an effectively large Θ 13 which is well motivated in GUT frameworks. Second, (tri-)bimaximal mixing itself might need to be modified, e.g. by a modified vacuum structure of the family symmetry breaking flavon fields. We present examples for both possibilities and show implications for the CP violation in the lepton sector.