Every release has a "perldelta" document that lists the changes since last release. You could read those in order since your last one.
Here's the latest, for example:
https://perldoc.perl.org/perl5400delta
Paul Evans /
npub1hl…rgkyk
2024-06-10 22:01:21
in reply to nevent1q…d79y
Author Public Key
npub1hlpkkqf7sthaqvhufu9v2k8p0tpy5vcv8df6zaw4jzm36s3x3g7srrgkykPublished at
2024-06-10 22:01:21Event JSON
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