Heya folks :)
I’m happy to let you know that we now have a demo system where you can follow Wikidata development hands-on. The demo system will be updated regularly so you can always see what we’ve been up to and try it out yourself.
Please keep in mind that this is a system for testing so things might and probably will break here and there. There will be bugs. If you find any of them please tell us. There will be missing features or things that are not really finished yet. Data in there can be deleted at any time. That being said we hope that this gives you a good view of where Wikidata is heading and an opportunity to try it out and give feedback before it gets deployed.
Right now you'll only see the start of the interwiki-link part of Wikidata. This means there is a repository where the links are collected and stored and a client that uses them.
We’re looking forward to your feedback. For small comments please use the feedback link at the top of each page. For bug reports please use http://bugs.wikimedia.org (component Wikibase Client or Wikibase Repo in the product MediaWiki Extensions) and mention any information that might be relevant. And you’re of course free to discuss on this list.
Thanks for your help with testing this. Your feedback is important to make Wikidata successful.
You can access the demo at http://wikidata-test-repo.wikimedia.de.
Cheers Lydia