• Minimum PHP supported version is now 5.5 (#820, @PowerKiKi)
• Support AVIF, HEIC, and JXL in Imagick driver (#759, #765, @ausi)
• Support AVIF in GD driver (#791, @mlocati)
• Make the $filter parameter of the resize method invariant (#776, @mlocati)
• Ability to specify the alpha-blending of the GD drawer (#790, @mlocati)
• Add support for SINCFAST filter in Imagick driver (#823, @mlocati)
• Fix applyMask() for GD driver (#708, @ninze)
• Fix PHP 8.1 compatibility (#768, #791, @ausi, @mlocati)
• Fix error handling in grayscale() for Gmagick driver (#757, @dmitry-kulikov)
• Fix convolve() for Imagick driver (#775, @mlocati)
• Fix array retuned by histogram() method of GD and Imagick drivers (#797, @mlocati)
• Fix handling alpha channel in Imagick (#775, #798, @mlocati)
• New Driver\Info classes to inspect installed drivers (#802, #805, #806, @mlocati)
• Fix wrong load logic in Imagick (#807, @mlocati)