But he said nothing about "inventing" a language. In fact said very clearly that he wanted to take an existing language and add to it - particularly the things that PHP does do well.
from TFA:
> "to buff up a open source language ecosystem such that it can truly compete with PHP in ease of installation and deployment"
I suspect that he is being deliberately vague here; in other words there is an announcement coming at some later date and this is preliminary PR. That doesn't make it untrue though.
Currently, no other language can match that. They either require a VM running (Java, Ruby, etc.) or at least have a compile/build step (Python).
UWSGI has a lot of promise, but until it's as easy to get configured as PHP-FPM, PHP is still way easier than everything else.