Magento 2.4.8 Is Here, And It Brought a Broom for Your Codebase

Adobe Commerce 2.4.8 (including Magento Open Source) dropped on April 9, 2025, bringing meaningful improvements across performance, APIs, payments, and security. But more than a version bump, this release signals a push toward cleaner architecture, modernized dependencies, and faster headless support. If you’re a Magento dev, here's what you actually need to know about what changed, what broke, and how to upgrade with confidence. ⚙️ Under-the-Hood Magento Improvements First, let’s explore the core-level improvements and what they mean for your daily work with Magento. PHP 8.4 Support (and 8.1 Deprecation) Magento 2.4.8 is now compatible with PHP 8.4, a major shift, as 8.1 reaches end-of-life. Here’s what it means for your codebase: Removed deprecated PHP functions and interfaces. Any legacy patterns relying on outdated PHP 8.1+ methods are now gone. This can affect both your code and vendor packages. Stricter type checking. PHP 8.4 enforces type signature and return type consistency more aggressively. Mismatches that were warnings or notices before may now result in fatal errors. Third-party module instability. Many older extensions, especially ones not updated recently, may no longer be compatible out of the box. Sounds grim, but it’s all for the better cause of a leaner codebase. To adapt to 2.4.8, here’s what the Amasty team recommends: Run static analysis early to catch type mismatches, return inconsistencies, and deprecated calls. Review your CI pipeline and adjust composer constraints. Make sure all dependencies support ^8.4. Test custom modules in isolation before merging into your upgrade branch. Just because Magento boots doesn't mean everything works.

Apr 15, 2025 - 15:31

Magento 2.4.8 Is Here, And It Brought a Broom for Your Codebase

Adobe Commerce 2.4.8 (including Magento Open Source) dropped on April 9, 2025, bringing meaningful improvements across performance, APIs, payments, and security. But more than a version bump, this release signals a push toward cleaner architecture, modernized dependencies, and faster headless support.

If you’re a Magento dev, here's what you actually need to know about what changed, what broke, and how to upgrade with confidence.

⚙️ Under-the-Hood Magento Improvements

First, let’s explore the core-level improvements and what they mean for your daily work with Magento.

PHP 8.4 Support (and 8.1 Deprecation)

Magento 2.4.8 is now compatible with PHP 8.4, a major shift, as 8.1 reaches end-of-life. Here’s what it means for your codebase:

Removed deprecated PHP functions and interfaces. Any legacy patterns relying on outdated PHP 8.1+ methods are now gone. This can affect both your code and vendor packages.
Stricter type checking. PHP 8.4 enforces type signature and return type consistency more aggressively. Mismatches that were warnings or notices before may now result in fatal errors.
Third-party module instability. Many older extensions, especially ones not updated recently, may no longer be compatible out of the box.

Sounds grim, but it’s all for the better cause of a leaner codebase. To adapt to 2.4.8, here’s what the Amasty team recommends:

Run static analysis early to catch type mismatches, return inconsistencies, and deprecated calls.
Review your CI pipeline and adjust composer constraints. Make sure all dependencies support ^8.4.
Test custom modules in isolation before merging into your upgrade branch. Just because Magento boots doesn't mean everything works.