Following today's update, Apple plans to add support for six new soccer leagues to the next version of the Sports app, MacRumors has discovered. Earlier today, Apple released version 3.7 of the Sports app, introducing support for every PGA and LPGA tournament, with live leaderboards, round-by-round scorecards for every golfer, and real-time updates in the app, widgets, and Live Activities. The app already supported the NFL, MLB, NBA, NHL, Premier League, NASCAR, F1, and more. The update also expanded the soccer lineup with support for Copa del Rey, Coppa Italia, Coupe de France, and DFB-Pokal. In addition, tennis coverage now supports real-time stats, making it easier to keep up with the action. Backend code spotted by MacRumors reveals what's next…