Caroline and Simon are already using it in Boston and Berlin and now there's a new one emerging. Mel and Lynne May are going to run a local deployment. In a way, this is going to lower the entry-barrier for other people interested in running deployments.
Mel's blog post has all the awesome details, so I'll just refer you there.
Now what can you do? As you've probably heard, Sugar on a Stick is going to become a Fedora Spin. This is important, because it's a significant part of the effort to make the whole SoaS project sustainable. So we need help especially concerning packaging and reviewing activities , to ensure a consistent user experience compared to the former releases. We've a wiki page and a tracking bug, as well as weekly meetings in #fedora-olpc on 1500 UTC.
Just stop by and introduce yourself - do so on-list.
 If you're new to packaging software for Fedora, you might be interested in skimming the logs of our recent Fedora Classroom session.