Noticed from the document that the deadline at the moment for validation of a foreign license required to operate an EU registered aircraft or foreign registered but with an EU resident operator aircraft for non-commercial purposes is 8th April 2014 or 8th April 2012 for commercial ones.
My understanding of this is that national authorities can require that validation earlier if they so wish but 8th April 2014 is the last time I can exercise my FAA PPL/IR privileges in an EU based N-reg aircraft.