The Star Wars Battlefront Ultimate Edition contains Star Wars Battlefront Digital Deluxe Edition + Star Wars Battlefront Season Pass. It basically contains 100% SWBF content and all the exclusive content as well. If you what to fully have everything and all exclusive content for SWBF in one go, then you should get the Ultimate Edition.
Take a look at this page here for full details on this edition: https://www.origin.com/en-ie/store/buy/star-wars-battlefront/pc-download/base-game/ultimate-edition .
