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Adobe Commerce (Magento) 2.4.8 is out. The headline is runtime and infrastructure support — PHP 8.4, Valkey 8.x for caching, MariaDB 11.4 and MySQL 8.4 LTS — alongside over 500 bug fixes.
The stack
PHP 8.4 is the significant one. If you are running an established instance on an older PHP version, 2.4.8 is a supported route onto a current runtime without a replatform, which is usually the cheapest modernisation available to a long-lived store.
The rest of the stack moves with it. Valkey 8.x is the supported caching layer, and on the database side 2.4.8 supports MariaDB 11.4 and MySQL 8.4 LTS. That last one matters for planning: an LTS database version buys you time before the next forced upgrade.
The 500+ fixes
The other half of the release is over 500 bug fixes across core functionality, extension compatibility and edge-case handling. None of them make a headline. Collectively they are the reason next year's support tickets are shorter.
If you are on 2.4.6 or 2.4.7
The upgrade path is designed to be straightforward, and backward compatibility holds for custom code and extensions that were built properly. The caveat is in that last word. The effort in a 2.4.8 upgrade is almost never in core — it is in your extension estate and the code you own.
So before you schedule it: inventory your extensions, check which have releases for 2.4.8 and PHP 8.4, and get an honest read on your custom code. Where a store carries a lot of bespoke work, folding the upgrade into a wider optimisation piece usually costs less than doing both separately.
If you want a second pair of eyes on the timing for your build, we are happy to talk it through.