Not exactly, the current situation is that XWiki 14.10.9+ supports Java 11 and 17.
Then Java Support Strategy - XWiki is wrong (my point was that I’ve used that page).
EDIT: I’ve just realized that I’ve read Java Support Strategy - XWiki wrongly 
Editing the proposal above as it was supposed to say XWiki 14.10.x (2022) supports Java 11 & 17. Thx
Thanks everyone, I’ve now updated https://dev.xwiki.org/xwiki/bin/view/Community/SupportStrategy/JavaSupportStrategy/?viewer=changes&rev1=13.1&rev2=15.2& and I’ve also configured some of our docker tests to start testing Java 21 to validate it ASAP (see [Misc] Move unsupported env tests to java 21 since we need to support… · xwiki/xwiki-jenkins-pipeline@27d9d2b · GitHub).
This means that we stop supporting Java 11 on master (16.0).
The next steps are:
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Move master (16.0) to build with Java 17 (and source = 17)
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Move our docker tests for 16.x to use Java 17(already done) -
Add a row to the table at https://dev.xwiki.org/xwiki/bin/view/Community/SupportStrategy/JavaSupportStrategy/#HByXWikiVersions
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Check that java 17 is installed on the release agent (thanks Thomas) - What else?
Thx