This is the spec for the language Douglas Crockford (author of the book "JavaScript: The Good Parts", the JSON specification[1], JSLint[2]) had explained in his famous talk: "The Next Programming Language"[3].
The "big things" in the language are the Actor model, favouring immutability and capabilities-based security.
Presumably, there will be a flashy website later that actually motivates why you should use this language and what's cool about it. Notice this looks similar to the JSON spec website[4].