Enhanced Text Rendering in UMG - What exactly it is?

I’ve noticed that in UE 5.5 we got “Enhanced Text Rendering In UMG”, but the notes are not specifying what work was exactly done to enhance it. Is there any kind of paper/article or just name of the algorithm used to render text in UE 5.5? Is it just different SDF implementation or is it some kind of curve rendering?

Link to the change notes: Unreal Engine 5.5 Release Notes | Unreal Engine 5.5 Documentation | Epic Developer Community

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I needed to test font rendering capabilities in UE5.5 for the project currently and I’ve noticed UE sneakily added SDF and MSDF font support in UE5.5: Using Signed Distance Field Text Rendering in Unreal Engine | Unreal Engine 5.5 Documentation | Epic Developer Community
It’s a little bit weird for me that it’s not mentioned more as for me it’s seems like a big improvement over old bitmap fonts.

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