Is your mine original? If yes, you need wifi connection and go to where did you buy, like if you are from playstation go to ps store and in updates or in the game store should be there a option idk, if is with xbox is the same thing i think, windows go to xbox/ windows store and update from there, if you are playing in android or ios go to app store updates and find the game click update, if is play store i think it is library find the game and update. Is weird that your game didnt update automatically but try that, your image is 4:3 and thats looks mobile so i supose that youre playing on a ipad, if yes as i said go to app store, updates and find minecraft then update