The Wayback Machine - https://web.archive.org/web/20190821091212/https://developer.jetpack.com/

    No new hooks added in 7.6 Below are recently added.

    jetpack_sync_whitelisted_comment_types

    hook (filter): Comment types present in this list will sync their status changes to WordPress.com.

    Source: packages/sync/src/modules/Comments.php:152

    jetpack_verify_api_authorization_request_error_double_encode

    hook (action): Jetpack authorisation request Error.

    Source: class.jetpack.php:5952

    jetpack_verify_signature_error

    hook (action): Action for logging XMLRPC signature verification errors. This data is sensitive.<p>Error codes:</p> <ul> <li>malformed_token</li> <li>malformed_user_id</li> <li>unknown_token</li> <li>could_not_sign</li> <li>invalid_nonce</li> <li>signature_mismatch</li> </ul>

    Source: class.jetpack.php:5256

    jetpack_connection_register_success

    hook (action): Jetpack registration Success.

    Source: class.jetpack.php:4075

    jetpack_connection_register_fail

    hook (action): Jetpack registration Error.

    Source: class.jetpack.php:4061

    jetpack_verify_secrets_success

    hook (action): We've succeeded at verifying the previously generated secret.

    Source: packages/connection/src/Manager.php:391

    jetpack_verify_secrets_fail

    hook (action): Verifying of the previously generated secret has failed.

    Source: packages/connection/src/Manager.php:307

    jetpack_verify_secrets_begin

    hook (action): We've begun verifying the previously generated secret.

    Source: packages/connection/src/Manager.php:295

    jetpack_get_module_path

    hook (filter): Filters the path of a modules.

    Source: class.jetpack.php:2514

    jetpack_news_sitemap_include_in_robotstxt

    hook (filter): Filter whether to make the news sitemap discoverable to robots or not. Default true.

    Related to Modules:
    Source: modules/sitemaps/sitemaps.php:480