There is a thing on the github org indra-labs but we moved work onto a private host that sits on my desk for now. We don't have the manpower or budget to manage much marketing, this here is basically it. The white paper you can find on github is still pretty much current, not any major differences have emerged yet in how it's being implemented.

When we have something we can use testers for, we will make a bit more noise for a private alpha testnet.