Python has a 12 month release schedule[0], so 3.14.0 should be released in October 2025. Of the python 3 versions, only 3.6 and 3.7 got to .15, about 4 and 5 years after their releases[1]. But 3.9.14 was released last month, less than two years after it's initial release. So somewhere between 2027 and 2030?

[0] https://peps.python.org/pep-0602/

[1] https://www.python.org/doc/versions/