Check all scenarios
=> Set device language to other except english(EX: gujarati) -> In what's new there should be "ગુજરાતી".
=> Set device language to English & add other except english in keyboard -> we are checking all languages of keyboard(Ex: [Polish, Hindi, English], we will consider first language we got different than english) -> In what's new there should be "Polski"
=> Set device language to English & in keyboard there should be only english, in old version app set app language to other language(EX: Chienese) -> install new build -> In what's new there should be "中国人"
=> Set device language to English & in keyboard there should be only english, in old version app set app language English -> add templates having text in other language(EX: "નમસ્તે") -> In what's new there should be "ગુજરાતી".
=> Set all to english -> Then if device's country's national language is english then what's new will not display otherwise in what's new text will be as per device's country's national language.
Note: we are storing language code which being display in what's new