The NBA is considering expansion to 32 teams, with Mexico City and two existing markets (Vegas and Seattle) being considered. If Seattle and Las Vegas are chosen, one Western Conference team would need to move to the East, potentially impacting future championship races. The scheduling format would also require adjustment, possibly involving a four-division system.

Source: https://www.cbssports.com/nba/news/nba-expansion-hasnt-happened-for-20-years-so-what-does-the-future-hold-as-league-looks-to-grow-to-32-teams/