City Edition uniforms (used in the NBA and MLB) and court designs (for the NBA) appear occasionally during the season to illustrate a connection between a team and the city in which it plays. Some teams' logos already incorporate aspects of the home city (for example, the Warriors' use of the Golden Gate and Bay Bridges). Others do so to a lesser degree, if at all.
This season, the Minnesota Timberwolves are invoking a very basic idea in their City Edition imagery, namely that Minnesota is cold! As illustrated in this screenshot from the Wolves' website, especially in the court's keys, "The striking white and black aesthetic captures the contrast of winter landscapes, reflecting the elegance of snow-covered lakes under a moonlit sky."
I like this court. It's something different, without overwhelming the viewer.