Perl 5 Porters are the authority you speak of. You can contact them through their mailing list. Perhaps it would be prudent to peruse the archives (in the same link) before reaching out in case it's been brought up before.

In reply to Re: Rationale for why successive Perl releases are not XS-compatible? by stevieb
in thread Rationale for why successive Perl releases are not XS-compatible? by vrk

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