Of the 13 authors, 3 are at Anthropic. Of the 4 core contributors, 1 is at Anthropic.

Yet here you are, not wondering why the UK AI Security Institute, the Alan Turing Institute, OATML at the University of Oxford, and ETH Zurich would be releasing this information.

So I suppose the press release did the job it was supposed to do.

(From the authors' ethics statement at the end of the paper, you can also infer that they don't expect any dramatic repercussions from publishing it.)