Yes only found the announcement [1] that the Polars team and NVIDIA engineers are working on a GPU engine, but other than that no concrete examples. Github issues also don't provide any hints on the status, only one open item [2] where most comments are prior to the announcement.

[1] https://pola.rs/posts/polars-on-gpu/

[2] https://github.com/pola-rs/polars/issues/13111