The DCD 2011 was already announced here at twisty, seeviewtopic.php?f=1&t=21347
The DCD is organised by the NKC, the Dutch Cube Club.
The speedcubing, including the Dutch Open, is hosted by the DCD and is part of the DCD.
The DCD is an 'on invitation only' event. For reasons of insurance, to avoid the presence of non-puzzle people and because of catering reasons it is required to apply in advance for an invitation. In case you would like to participate, please send me an e-mail (preferably) or, in case you don’t know my e-mail address, a PM.
Furthermore, I would like to propose to stick to one topic for the DCD (see above mentioned link).