Metablriger V2.8 has been released!
The main update adds functionality for previewing and editing RBF (Radial Basis Function) corrective poses. It also fixes several potential bugs found in previous versions.
The plugin now supports reading RBF corrective poses directly from the Body DNA for preview. Users can adjust the corrective effects by modifying the Translation, Rotation, and Scale (TRS) of the corrective bones and saving the results to a new DNA file. Additionally, it supports modifying bone positions in the Neutral Pose; users can immediately preview the resulting RBF pose deformations caused by changes to the natural bone positions and save these updates to the DNA.
https://dev.epicgames.com/community/learning/tutorials/6vn3/unreal-engine-metahuman-metablriger-v2-8-add-preview-and-edit-rbf-corrective-poses-feature