Priced at $10 / 800 Microsoft Points, the add-on delivers the three boxers listed above along with two new gamplay modes: Old School Rules and Ring Rivalries.

In addition, December will also bring a free gameplay patch that includes:

Game Play Updates
• Adjusted the locomotion speed at close proximity so that your opponent can no longer trap you with glued feet
• Increased the stamina cost when continually punching
• Increased stamina loss when continually weaving
• Increased stamina loss for users that spam upper body movement
• Can no longer perform a perfect block when spamming the block
• Increased the stamina cost when continually running away from your opponent
• No illegal blows can be thrown by either user when one user is in a stun state
• Increased stamina cost of Haymakers
• Tuned punch accuracy when opponents are moving their head
• Reduced locomotion speed when throwing punch combos
Create Player Updates
• Allow users to duplicate and edit ratings of licensed boxers
Online World Championship Updates
• Improved cheat detection logic
General Updates
• Various Bug fixes