The idea that there is no 'future tense' is becoming common knowledge even in exam-oriented English education.
Literal
'Future-tense' [called-というの][topic-は] not-exist, [quotative-ということ][topic-は] exam-English [in-で][also-も] common becoming-[progressive-つつあります].
受験英語 'exam English' — the English taught for the purpose of passing entrance exams, a distinct phenomenon in Japanese education. ~つつあります is a formal progressive: 'is in the process of becoming.' The sentence discusses a shift in linguistic thinking within Japanese English education.