Those are amazing feature so finally we won’t need to disable/remove old plugins and themes to update them to latest versions.. This was so annoying time consuming issue. There is also an uldate related to wordpress cache.. In WordPress 5.5 a new function was added called wp_cache_get_multiple() with the capability to get multiple cache keys in a single request. The function wp_cache_get_multiple() accepts an array of keys and fetches multiple cache values from the same group.