Thread:Extension talk:TemplateData/MediaWiki 1.22 or higher?/reply

I, also, wondered about this edit when I saw it. I was not involved with any earlier version. Thus, I can not state from past experience as to TemplateData being available for 1.20 (what the text was changed from). However, I was able to determine some information:
 * 1) TemplateData is downloadable for 1.21.
 * 2) All changes for TemplateData I looked at within en.wiki indicated that such changes started in late June 2013. This corresponds with when the 1.21 release would have gone live on enwiki.

I can not prove that it is available for 1.20, but it definitely is available for 1.21. I have changed the text accordingly.