From Guido: he expects &quot;Python 4.0 will merely be &quot;the release that comes after Python 3.9&quot;. That&#x27;s it. No profound changes to the language, no major backwards compatibility breaks&quot;<p><a href="http:&#x2F;&#x2F;www.curiousefficiency.org&#x2F;posts&#x2F;2014&#x2F;08&#x2F;python-4000.html" rel="nofollow">http:&#x2F;&#x2F;www.curiousefficiency.org&#x2F;posts&#x2F;2014&#x2F;08&#x2F;python-4000.h...</a><p>Would be nice if it was simply 3.10 not 4.0, as there&#x27;s much discussion on that too.