I believe Polar is referring to the possible future replacement of the JAA, EASA (the European Aviation Safety Agency).
The idea is, that unlike the JAA, they'll have legal powers. At the moment, the CAA completes this task. So rather than each individual state body implementing the law, one body will be responsible for it all. Which will probably mean more changes! At least that's my intepretation of it...
If anyone can correct me on my inaccuracies, please do so.