https://bugzilla.redhat.com/show_bug.cgi?id=1001446
--- Comment #10 from Mike FABIAN mfabian@redhat.com --- There was no significant change in langtable for these names recently.
So I think on f19, Anaconda uses
print language_name("zh_CN")
简体中文 (中国)
print language_name("zh_TW")
繁體中文 (台灣)
and on f20 it uses only
print language_name(languageId="zh", territoryId="CN", languageIdQuery="zh")
中文 (中国)