Following up on Nick's post from yesterday, there is now a public sandbox for the 2.0 beta. The beta sandbox is set up with Clearspace, not Clearspace X, but you can check out all of the new features that are in both products in the sandbox. You can register as a new user in the sandbox, but please be aware that the instance and data will be taken offline in early April with the general release of 2.0.
The best place to contribute is in the Clearspace Beta space. Thanks again for all your questions, comments, and feedback over the past few weeks!