They must have just pushed this, because I was looking at it yesterday and it was the old tired and broken (by comparison) version of the page. Has the edition

They must have just pushed this, because I was looking at it yesterday and it was the old tired and broken (by comparison) version of the page. Has the edition changed? I'm a bit confused. I'm reading the O'Reilly eBook and it seems like what I'm reading is a draft. There are chapters seemingly missing (for instance, they described Map well enough but skipped reduce and went right into talking about Sofa without ever introducing Sofa) However, I am reading it cover to cover and it is pretty thorough and not a bad book. I just wonder which version I have and how it compares to the two on the new webpage. Maybe we need a standard for book versions. Rather than just "Editions" something of a smaller increment. Like Edition/Revision.