There it is again. Since the release of the 1.25.0-version the 1.24.2-version is marked as LTS version again on the download page. This has happend already in September 2014 when 1.24.0 was launched. Someone stated, that 1.27.0 is going to become a LTS version and not 1.24.0. (https://www.mediawiki.org/wiki/Thread:Project:Support_desk/Long_term_support_release).
Topic on Project:Village Pump
I've edited Template:DownloadMediaWiki to fix that. I hope it's now correct. Someone needs to mark that version for translation, though
Done Marked for translation.