Paradigm Concepts has a Kickstarter underway for their new sourcebook for Arcanis. This one’s The Cradle of Empires.
From the campaign:
While the Cradle of Empires sourcebook has new rules to support the setting, the majority of the manuscript is story and source material – so dropping it into an existing campaign as a remote and mysterious region is no problem. Use another system? Then just adapt the robust setting and history to whatever game system you’re using to add a deeper, richer playing environment for your current campaign!