The 4th Fabulous Cup will be held from 25 to 27 April 2008, in Cologne, Germany.
This competition follows the ISI competition regulations, and the organisers plan a test session on 25 April for those participants who need it. There will be also be a gala show featuring the participants. Though I have never been to the Fabulous Cup, I have friends who say they thoroughly enjoyed it.
The official website is not yet up-to-date, but I presume it will be soon!
Download announcement for Fabulous Cup 2008