UBS will be updated to WordPress 5.1.1 on May 23rd, 2019. You’ll notice a handful of changes throughout your Dashboard but one that we want to share is the new Page/Post editor called Gutenberg.
It’s a big change from the current, “Classic” editor you’re familiar with so far. The Classic editor will continue to be available by default for all current and new sites. Site Administrators are welcome to try out the new Gutenberg editor at any time by logging into the Dashboard, clicking on Plugins in the left hand menu, then deactivating the “Classic Editor” plugin.