Storefront 2.3.1 has been tagged for release and uploaded to WordPress.org.
Here’s what’s changed pulled directly from the changelog:
* Feature - Add support for GDPR features soon to be introduced in WordPress 4.9.6. * Tweak - Removed inline CSS cache; WordPress autoloads options by default, there's no advantage to caching the CSS. * Fix - Made changes to `icons.scss` to address an issue where Font Awesome icons were not being displayed correctly on some sites. * Fix - Apply clearfix to `.col-full` globally.
Download the latest release of Storefront here or venture over to Dashboard → Updates to update your theme from WordPress.
As usual, if you spot any other issues, please log them in detail on Github.