The term najnowsze dzieje polszczyzny / najnowsze dzieje języka polskiego (the latest history of the Polish language) has been in use since the late 1970s and the early 1980s. It has brought problems concerning the chronologisation and internal periodisation of that period in the history of the Polish language. The participants of the discourse, which has continued since the early 1990s, include linguists such as Antoni Furdal, Krystyna Kleszczowa, Stanisław Borawski, Stanisław Dubisz, Irena Bajerowa, Ewa Woźniak. Their publications clearly evidence the need for distinguishing the period in the periodisation of the Polish language, while differing as to its specific timeframe, distinction criteria, and internal periodisation. This study aims to compile the data, present the history of the discourse, and make a summary proposal.