No multiplayer patch is established here
The official store currently lists single-player gameplay and optional leaderboards. The sources cited below do not establish a co-op release date or a version 1.2.0 multiplayer patch for Tidy Up the Town. Patch notes belonging to another building or sorting game cannot support that claim.
Read an announcement in context
Check the game title, developer and Steam app ID before following an update summary. Tidy Up the Town is published by Pawsmonaut Games under app 5190030. A bundle with another game does not transfer that game’s multiplayer features to this one.
What players can do now
The confirmed social competition is through optional leaderboards, while the market cleanup itself is single-player. If new functionality is announced later, verify whether it is a proposal, a test or a released feature. Read the co-op explainer or game overview for current gameplay context.