Microsoft revealed the following on the Xbox News site

 

 

Our favorite thing about working with Cities: Skylines – Xbox One Edition is getting to see the creative ways that our players bring their towns together, and we’ve enjoyed seeing what you’ve shared. Still, we’ve all suspected that there was something missing from the game, and we think we’ve finally figured out the problem: why aren’t we letting players add statues of hamsters the size of the Space Needle?
Tomorrow, February 20, we’re finally adding that feature to the game – and several more that our players have created for Cities: Skylines – Xbox One Edition. We’re proud to announce the arrival of user-created mods to our favorite city-building game, available this week as free content for all players! If you’ve ever wanted to give your community a fancy clock tower, or put in some swimming pools, or even turn the planes at your local airport into futuristic spacecraft, your fellow Cities fans have been hard at work to let you do just that.
Now this is amazing news. What mods do you hope to see come to Cities: Skylines – Xbox One Edition? What do you plan to bring? Let us know!