Update release-notes-elasticsearch-beta1.asciidoc (#3024)

Caused by a bug that was fixed via elastic/elasticsearch#128050

---------

Co-authored-by: shainaraskas <[email protected]>

Author: martijnvg

docs/en/install-upgrade/release-notes/release-notes-elasticsearch-beta1.asciidoc

@@ -244,9 +244,11 @@ this value, you will need to update your filters to use `elasticsearch.deprecati
 [%collapsible]
 ====
 *Details* +
-Logsdb will be enabled by default for data streams matching with logs-*-* pattern.
-If upgrading from 8.x to 9.x and data streams matching with log-*-* do exist,
-then Logsdb will not be enabled by default.
+Logsdb index mode will be enabled by default for data streams matching with `logs-*-*` pattern.
+When upgrading from 8.18.2 or later to 9.x, if data streams matching with `log-*-*` exist,
+then logsdb will not be enabled by default. 
+
+For versions prior to 8.18.2, it is strongly advised to first upgrade to 8.18.2 or later prior to upgrading to 9.0.x. Otherwise, logsdb will be enabled by default regardless of whether matching data streams exist.
 
 *Impact* +
 Logsdb reduce storage footprint in Elasticsearch for logs, but there are side effects