To use the tweetstorm feature, a WordPress user will first click on the Jetpack icon on the top right of the page, then connect their Twitter account to their WordPress site, if that hadn’t been done already; writes Sarah Perez.
Here is the link: https://techcrunch.com/2020/10/13/wordpress-can-now-turn-blog-posts-into-tweetstorms-automatically/
You can find the WordPress blog post announcing the new feature here.