If you are talking about having an EASA aerobatic rating issued, then that won't come into effect for another 3 years or so as the CAA have opted for a 3 year derogation for that and other non-JAR ratings, so approx. April 2015.
Of course plenty may change before then, like the !!!!e about having to do 40 hours post-PPL before starting your EASA aeros course. Tossers.