According to Marijn Haverbeke's twitter feed[0]:

"I am happy to announce that the online edition of Eloquent JavaScript's 2nd edition is done, and online at " http://eloquentjavascript.net

[0] https://twitter.com/marijnjh/status/494433950505644032

It more or less is, apart from some further proofreading. I forgot to update the README file.

Reading through the first few chapters I found a couple of words with double brackets round them (( )) that look like they should just have been italics (or maybe links to another section?).

Those were index terms that weren't properly parsed by asciidoc. Should be better now.