Good grief, don't look at the UE4 release notes for each release then. It's a C++ game engine, and the release notes go on for pages detailing the new features. You'll have a conniption.
Game engines this size often add many new features with every release, and the target audience (programmers and artists) want to know about all of them.
The release notes cited are models of clear communication. No one encountering them would need to look anywhere else to know whether UE might be of some interest.