Feature Release 2.5.0

• Feature: Added Delay Scripts (Pro)
• Fix: Several PHP 8 warnings
• Fix: Fragment Cache extension PHP warnings when no engine was selected
• Fix: Fragment Cache engine selection disabled for pro license under certain conditions
• Fix: Added Database Cluster compatibility for older db.php files
• Fix: Fixed one PageSpeed tool metric not outputting data and adjusted a few labels
• Fix: Multiple anchor links for PageSpeed block on the General Settings page
• Fix: Cache Groups validation on save
• Fix: Cache Groups delete button not working for added groups
• Update: Renamed Image Service feature to WebP Converter
• Update: Added WebP Converter block to General Settings page along with a link to the navigation bar
• Update: StackPath CDN prices (Service ending November 22, 2023, and will be replaced by Bunny CDN in a future update)

Patch Release 2.4.1

• Fix: Add a fallback for the older version of wp-content/db.php

Feature Release 2.4.0

• Feature: Added filter "w3tc_config_item_objectcache.enabled" to allow for disabling W3TC object cache
• Fix: Auto-apply W3TC Pro license after purchase via in-plugin purchase/upgrade buttons
• Fix: PHP 8 warnings for Page and Fragment caches
• Fix: Replaced delete_blog deprecated hook with wp_uninitialize_site and wp_update_site
• Fix: Database Cluster configuration file save issue
• Fix: Fragment cache will now be disabled for non-pro users instead of being only disabled on the front-end
• Fix: Premium services widget list is now synced with the support page
• Update: User interface updated for cleaner appearance and easier navigation and control
• Update: Added support for get/set/add/delete wp_xxx_multiple methods to Object cache

Patch Release 2.3.3

• Fix: Fragment Cache: Fatal error when displaying registered groups
• Fix: PHP 8 deprecation warnings in the SNS Message Bus and NuSOAP libraries
• Fix: Broken nonce for renewal form
• Fix: Page Cache: Moved hardcoded query string exemptions to the settings page
• Update: Redis and Memcached host/IP/domain configuration examples

Patch Release 2.3.2

• Fix: Correct interpolation of a symlinked cache directory
• Fix: Memcached test using SASL authentication
• Fix: Multi-site authorization request returning to incorrect URL

Patch Release 2.3.1

• Fix: PHP 8 compatibility: Invalid return type if Browser Cache is disabled
• Fix: Added AWS SNS message classes (aws/aws-php-sns-message-validator)
• Fix: PageSpeed service: messages and escaping
• Fix: Image Service meta query handling
• Update: Dependency version updates
• Update: Content-Security-Policy (CSP) and Content-Security-Policy-Report-Only (CSPRO) header field configuration

Feature Release 2.3.0

• Feature: PageSpeed Insights reports and performance page widget
• Feature: Added basic OpenLiteSpeed support
• Feature: Add Permissions-Policy to mirror Feature-Policy directives
• Fix: PHP 8.2 compatibility
• Fix: GuzzleHttp 7 conflict with Azure
• Fix: Allow object cache updates when using WP-CLI
• Fix: Added missing Page Cache configuration "host" value
• Fix: Missing on_comment_status action callback
• Fix: Flush cache on attachment update
• Fix: Varnish flush for posts
• Update: Improved comment status logic for flushing database and object caches
• Update: Adjusted FTP form style
• Update: Removed deprecated MaxCDN and NetDNA components and added a notice if one was used
• Update: Removed deprecated FeedBurner

Patch Release 2.2.12 (2023-01-18)

• Fix: Comment status change error
• Fix: Varnish flush post arguments

Patch Release 2.2.11

• Fix: Error when flushing page cache after an attachment update
• Fix: Optimized and fixed object cache flushing
• Fix: Scheduled post page cache flushing
• Fix: Admin bar flush cache for current page with disabled purge policy
• Fix: Loop when disabling Minify HTTP/2 push setting
• Fix: Extension admin notice missing links
• Update: Removed custom translation files

Patch Release 2.2.9 (2022-12-12)

• Fix: Reset our textdomain for translations
• Fix: Escape output in compatibility checker, minify, and New Relic pages
• Fix: Admin notice buttons on non-plugin pages
• Fix: Namespace on exception type in a minify class
• Fix: Translation issues due to hooks and typos
• Fix: Broken JavaScript in admin_print_scripts calls when language is not English
• Fix: Deprecated warnings in JS and CSS minify
• Update: Translation files