SonarQube LTS should ship with the version of Elasticsearch which will be supported by Elastic until the next LTS of SonarQube.
SonarQube currently bundles Elasticsearch 7.9.3.
Elasticsearch 7.11.0 was released on 10th of February. A patch version 7.11.1 is already announced to fix a know bug related to LDAP.
However, 7.11 is released under the new license Elastic License 2.0 which is currently (February 11th) not settled and under scrutiny by Olivier G and Seb. Decision to upgrade to 7.11 is not yet taken.
7.10.2 being licensed under Apache 2.0 (7.10.3 will not be Apache 2.0 since license change will apply to any new release), upgrade to this version can be done anytime and SQ LTS must ship with at least this version.
Elasticsearch will be upgraded to 7.10.2 with the goal of making it to 8.7. The rational is two fold:
1. benefit from any feedback from our user base about this upgrade before LTS
2. reduce the gap if we decide to upgrade to 7.11 in 8.8
No functional impact discovered. See link to ES upgrade spreadsheet.