WordPress 5.8 was released on July 20 and nearly all our client’s sites were updated the same day.
This release includes additional improvements to the Block editing system, drops support for Internet Explorer 11, and adds support for the reasonably new WebP image format. WebP images are around 30% smaller on average than their JPEG or PNG equivalents, resulting in sites that are faster and use less bandwidth.
Full details on the release: https://wordpress.org/news/2021/07/tatum/