Board Thread:Lua Help/@comment-166269-20150217184425/@comment-11733175-20150312130017

It appears to have been updated now :)

As for the lack of recent Scribunto additions, I suspect beyond the initial backport and addition of specific libraries, e.g. mw.message, there hasn't been much else backported due to time constraints. It works, so it'll have to do for the time being. I also imagine the bulk of updates are prevented by the lack of ContentHandler support which is used to provide doc page transclusion and thus may be tied into a range of other features. Unfortunately, no one knows quite how tied in it is until they try to untangle it