No, you didn't miss anything, it's just confusing...

The file you downloaded has the fix in it. I keep updating the download .zip file, but rather than increment the version number each time (a real pain) I wait until there are a bunch of changes and then release a new version.
But in the mean time, I keep track of all the changes in the revision history, under the next version number (in this case, 5.7). I stuck in the date of the 21st weeks ago, as an estimate of when 5.7 might be released. That date has come and gone, but I haven't updated it in the file to my next "guess" yet.
