https://www.oldunreal.com/phpBB3/viewtopic.php?f=51&t=10395

This was released on June 23, 2022

This is the (yet semi) official release of Unreal 227j. The patch can be applied on any existing Unreal version, including base Unreal, Unreal Gold and Unreal Anthology. Note that the installer may not always find the correct path to your Unreal installation, so make sure to correct it manually.

Due to its massive scope, the 227j patch may contain errors. We invite everybody to try it out and give us feedback.

The release notes are very long, but give you a short overview: Windows 10/11 support (32-bit and 64-bit), Linux support (32-bit and 64-bit), Linux ARM (Cortex-A72) support, a completely new future-proof renderer (XOpenGL) with new features, as well as many new functions and improvements in UnrealEd 2.2.