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15 changes: 15 additions & 0 deletions docs/en/install-upgrade/upgrading-stack.asciidoc
Original file line number Diff line number Diff line change
Expand Up @@ -9,6 +9,21 @@ These steps vary based on your current version:
* <<prepare-to-upgrade,Upgrade from 7.x>>
endif::[]

[IMPORTANT]
.Out-of-order releases
====
Elastic maintains several minor versions of the Elastic Stack at once. This
means releases do not always happen in order of their version numbers. You can
only upgrade to {version} if the version you are currently running meets both
of these conditions:

* Has an older version number than {version}.
* Has an earlier release date than {version}.

If you are currently running a version with an older version number but a later
release date than {version}, wait for a newer release before upgrading.
====

IMPORTANT: Upgrading from a release candidate build, such as 8.0.0-rc1 or
8.0.0-rc2, is not supported. Pre-releases should only be used for testing in a
temporary environment.
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