Searching the very title on Google give me these:
(2023) Is the 4-day work week closer than we think? - Nearly half of Aussies think it will happen within five years. https://ia.acs.org.au/article/2023/is-the-4-day-work-week-cl...
(2021) Four-Day Workweeks Are Closer To Reality Than You Think https://www.forbes.com/sites/mikeswigunski/2021/05/03/four-d...
(2018) Why the 4-day workweek might be closer than you think — and the 10 careers best suited to it https://www.cnbc.com/2018/08/24/future-of-the-workforce-care...
.. Maybe it is as close as nuclear fusion.