Project: QGIS
Version: 3.12
Takes an input layer, existing field and a new name for the field, and outputs a new layer with the selected field renamed.
While this result could also be achieved with the Refactor Fields algorithm, Refactor Fields isn't particularly model friendly. It relies on a constant, fixed table structure, and can't adapt to input tables with different field structures.
In contrast, this simple Rename Field algorithm adapts nicely for model use, because it operates on a single field only and leaves all the other fields untouched.
This feature was developed by Nyall Dawson