no, sorry, I don't mean it that way.
What I mean is that the _very_ latest developments (i.e. theories of the past month or two), are generally not covered in popular science books, and nor should they be, as they may be far from correct.
The very latest steps will always be in technical literature only. Everyone else finds out once the theory has some supporters, a year or two down the line.
My comment was simply due to Hyperspace not containing anything at all about more recent developments in string theory, such as M Theory. Greene's book does cover this, as it was written later.
But I totally agree on what you're saying, popular science books are great!