Here is everything that Ubisoft says is included with the Season Pass:

    STEEP SEASON PASS INCLUDES:

    • Snowman Costume
    • 10,000 STEEP Credits
    • Helicopter Tickets
    WINTER FEST PACK

    • Winter Sled
    • New Challenges
    • New Costumes
    EXTREME PACK

    • Three New Sports – Rocket Wings, Base Jumping, and Speed Gliding
    • New Challenges
    ADRENALINE PACK

    • Moonlight Pack – Three Night Challenges, Three Costumes, Two Wingsuits, and Equipment
    • Two Boards
    • Two New Outfits

Each pack will also be available for purchase on its own. Further, if players purchase the Gold Edition of the game they will automatically be granted the Season Pass.