This is a minor release, which means everything is backward compatible with the previous version.
As always, we recommend creating a backup of your site and making sure that the themes and plugins are compatible before updating. You can check out this update guide for more information.
What’s new in 5.3?
WooCommerce Blocks 4.9.1: Blocks package has been updated to 4.9.1. Please take a look at the release posts for 4.8.0, 4.9.0, and 4.9.1 to see what’s new and improved.
WooCommerce Admin 2.2.6: WooCommerce Admin package has also been updated to 2.2.6 with this release of WooCommerce. This new package contains lots of bug fixes and stability improvements. The list of changes in the versions of WooCommerce Admin included since WooCommerce 5.2 can be found here.