If I'm correct the update should be coming in 6 days, academy professor gets game 8-10 days early and the next tier which gets the game 5-7 days early hasn't gotten it so 10 days early is likely when academy professor tier got the game which means next tier gets it in the next 2 days and since they can only be 5/6 days ahead that means at the latest we'll get it by the 17 or 18th
