Your reading of the post is different then mine. It appears to be the standard notice for a game patch. While there is no mention of Shadowbringers I suspect you are right in that regard. They should have just said that instead of adding a misleading patch number when the MINOR adjustment could have mentioned in the maintenance recap. People were expecting final nerfs to Pyros Light and possibly Hydatos. People know prep needs to be done for a new expansion so just tell them and they will accept it.