Quoting from WorldofWar.net:

We’ve been pressing and probing for nuggets of new info and we found out this morning that Blizzard have now shipped the Beta servers to Vivendi in Paris. So what does this mean? Well we have been told that the European Beta will be rolling out this summer, sometime around August. The European comunity and GM team is also now being assembled which means things are really moving along. Great news indeed for European fans.