No new hooks added in 12.1.1 Below are recently added.

    jetpack_show_wpcom_site_logs_menu

    hook (filter): Whether to show the WordPress.com Site Logs submenu under the main Tools menu.

    Source: modules/masterbar/admin-menu/class-atomic-admin-menu.php:391

    jetpack_stats_dashboard_widget_show_to_user

    hook (filter): Filter whether the Jetpack Stats dashboard widget should be shown to the current user.<p>By default, the dashboard widget is shown to users who can view_stats.</p>

    Source: class-jetpack-stats-dashboard-widget.php:54

    jetpack_sharing_mastodon_default_message

    hook (filter): Allow filtering the default message that gets posted to Mastodon. View Example

    Source: modules/sharedaddy/sharing-sources.php:3169

    jetpack_sharing_tag_list

    hook (filter): Allow customizing how the list of tags is displayed.

    Source: modules/sharedaddy/sharing-sources.php:191

    jetpack_import_types

    hook (filter): Allow other plugins to modify import routes.

    Source: jetpack_vendor/automattic/jetpack-import/src/class-main.php:87

    jetpack_import_initialized

    hook (action): Runs right after the Jetpack Import package is initialized.

    Source: jetpack_vendor/automattic/jetpack-import/src/class-main.php:55

    grunion_max_new_fields

    hook (filter): Filter to modify the limit of 5 additional contact form fields.

    Source: jetpack_vendor/automattic/jetpack-forms/src/contact-form/class-form-view.php:31

    jetpack_forms_dashboard_enable

    hook (filter): Enable the new Jetpack Forms dashboard.

    Source: jetpack_vendor/automattic/jetpack-forms/src/class-jetpack-forms.php:63

    jetpack_connection_user_has_license

    hook (filter): Check for the user's unattached licenses.

    Source: jetpack_vendor/automattic/jetpack-licensing/src/class-licensing.php:353

    jetpack_ai_enabled

    hook (filter): Filter whether the AI features are enabled in the Jetpack plugin.

    Source: _inc/lib/class-jetpack-ai-helper.php:85