WordPress announced that version 5.3 will utilize improved coding that will be nearer to HTML Standards. There are valid justifications why valid HTML should be considered as significant for SEO. While the WordPress HTML will not be 100% valid, this update is a step towards valid HTML standards.
WordPress new release date is hesitantly set on November 12, 2019. WordPress is no doubt the best content management system at the movement. This means the achieving the Valid HTML tag is becoming closer now for many websites.
Official WordPress Announcement
This is how the official WordPress announcement explains about changes in WordPress 5.3:
“In HTML5, the type attribute is not required for the