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What has that to do with 8.3 specifically? Or did you actually mean 8.x?

Nothing with 8.3 specifically. I just remember the last time I asked about the support for 6.x and 7.x it was basically a situation where if a release was needed (for a security fix for example), it would still happen, so it was still sort of "supported".

As I'm not affiliated to Gradle in any way, I of course cannot make a reliable statement. But I'd guess it simply depends on which vulnerability, where it is, and how hard it is to fix. I do not remember having seen any backport guarantees somewhere. But from https://gradle.org/releases/ you can see how it was in the past, so between 8.0.1 and 8.0.2 for example 6.9.4 and 7.6.1 were released

True. Both have had releases this year.

There's an unofficial summary on https://endoflife.date/gradle

The support and EOL policy is not clearly defined, but looking at the releases history and Feature Lifecycle page:

• only the latest release is receiving new features,

• after 7, 6 started to receive bug and security fixes,

• before 7, only the latest release were receiving bug and security fixes.