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A comment on Key differences between Python 2.7.x and Python 3.x (2014). Parent comment

Re:Key differences between Python 2.7.x and Python 3.x (2014) by Animats on Sunday May 07, 2017 @04:51PM (#14287589)
IMHO: after 3.5, we are clearly in the next iteration of the language.

After 3.4, which was a stability release. The async stuff and the beginnings of optional typing went in at 3.5. Numbering probably should have gone from 3.4 to 4.0.

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Re:Key differences between Python 2.7.x and Python 3.x (2014) by mrout on Sunday May 07, 2017 @06:12PM (#14287996)
Python 3.5 is compatible with Python 3.4. Python 4.0 would be a silly number to use, it implies that there's incompatibility.
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Re:Key differences between Python 2.7.x and Python 3.x (2014) by MereInterest on Monday May 08, 2017 @02:05AM (#14289568)
I can't find a source at the moment, but I'm pretty sure that Guido said that python 4.0 would just be the version number that comes after python 3.9. There is no intention of having another break in backwards compatibility, like there was between python 2 and 3.
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Re:Key differences between Python 2.7.x and Python 3.x (2014) by mrout on Tuesday May 09, 2017 @12:02AM (#14297650)
He's said 3.10 more recently than that:

https://twitter.com/gvanrossum/status/583346987925278720

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