Are you sure? The writing implies that it was written recently. (Does the emacs release team consider "any day now" == a year in "There’s a new Emacs minor release due out any day now,"?)
Either way, the article does not mention its publishing date anywhere, which is rather unfortunate for a medium like the internet, where text is forever.
> I'm guessing a lot of new stuff has been added since then.
The article implies it shouldn't have been:
> At the time of this writing Emacs 24.4 is in feature freeze; no major changes will get in, but the list of changes you see below is not set in stone – but it almost never changes much.