Going public? (though they explictly said they won't). Hedge funds are notoriously sensitive about privacy. The fact that Bridgewater has been featured in a number of high profile articles in main stream media makes me wonder if they are looking to go public, or to attract further funding (i.e. more clients).

Alternately, it could be as simple as Mr. Dalio wanting to do a bit of self PR before an impending book release?