User blog comment:Relwell/Wikia is moving to GitHub!/@comment-14779707-20131129081752/@comment-11733175-20131129095601

This blog is very old now and it's unlikely any staff are watching it.

To address your question, Lua support arrives with mw 1.22. We're on 1.19 at the moment which is supported until the middle of 2015. I suspect it's going to be around that time Wikia will update.