The v2.9.0 release of WP-CLI is scheduled to be published on Wednesday, October 25th 2023.
In addition to a lot of bug fixes and enhancements, this release is also expected to address the last known compatibility issues with PHP 8.2 and the upcoming WordPress 6.4 version.
The release candidate for this release will already be available sometime during the week prior, to allow for early testing. We will announce the availability of that release candidate in the #hosting-community channel to allow hosting providers to do early smoke testing.