IGN reports on each of the three packages.
Madden NFL 15: Ultimate Edition contains 30 ultimate team pro packs, spread across a 10-week period. It also comes with a draft class pack that includes 10 first-round picks from the 2014 NFL draft, so you can bolster your team even further.
FIFA 15: Ultimate Team Edition comes with the Adidas All-Star Team, as well as Lionel Messi (for five FIFA Ultimate Team games) and three new goal celebrations. It also comes with 40 Ultimate Team gold packs, spread across nearly a year of play.
Finally, NHL 15: Ultimate Edition will come packing with exclusive content for each team, as well as 50 gold packs spread across a 25-week period.
Each Ultimate Edition will sell for $69.99 apiece, $10 more than the usual going retail price. They'll release on the same day as their respective regular releases, this fall.