Differentially-Private Text Rewriting reshapes Linguistic Style

ArXi:2604.26656v1 Announce Type: new Differential Privacy (DP) for text matured from disjointed word-level substitutions to contiguous sentence-level rewriting by leveraging the generative capacity of language models. While this form of text privatization is best suited for balancing formal privacy guarantees with grammatical coherence, its impact on the register identity of text remains largely unexplored. By conducting a multidimensional stylistic profiling of differentially-private rewriting, we nstrate that the cost of privacy extends far beyond lexical variation.