There was a good interview [1] with Dominic, the author, a month ago, where he covered much of the design rationale behind Inferno. And he's on HN [2], and his comments often offer valuable insight as well. In a strange twist, he also just joined Facebook to work on React [3], so some of his ingenuity will find its way into React in the future. Meanwhile, Inferno is now run by a team of core committers [4].
[1] https://news.ycombinator.com/item?id=13160757 [2] https://news.ycombinator.com/threads?id=trueadm [3] https://twitter.com/trueadm/status/813313438759919616 [4] https://github.com/orgs/infernojs/people