PHP is still one of the most popular languages used to build the web. The newest version, PHP 7.4, was released today — and Business and eCommerce plan customers can opt to start using it immediately.
WordPress.com sites run PHP 7.3 by default — it’s still our recommended version, since it’s been stress-tested across all of WordPress.com — but if you have a site on the Business or eCommerce plan and want to be on the leading technological edge, you can opt to switch to version 7.4 immediately.
Head to My Site > Manage > Hosting Configuration to find the new PHP Version Switcher:

Choose which version of PHP you want your site to run on, click the “Update PHP version” button, and voilà.
(Note: All sites with eCommerce plans can make the switch right now. Sites on the Business plan need to have either an active plugin or a custom theme to use the PHP Version Switcher.)
PHP’s evolved with each version 7 release, and PHP 7.4 promises to have the strongest performance yet. It will eventually power all WordPress.com sites, but Business and eCommerce customers can take advantage of the update today!
This is cool.
Thanks for updating. I’m on free plan and a casual writer. Should I switch on paid plan or continue with the same for some more time. I am blogging since September 2019.
We are planning to update PHP for all WordPress.com sites in 2020. If you are satisfied with your site there is no need to upgrade, tho feel free to check the features.
Perfect.
Cool! 🔥🔥🔥
When do you think it will come to the other plans?
Probably in the first half of 2020.
My site is not on a Business or eCommerce plan, but for those who are it will be very useful. Still its good to know, what is new and being upgraded. Thank you for all your effort for new improvements!