The phrase "new addition" refers to something that has been newly added or introduced. It can be used in various contexts, such as referring to a new member joining a family (e.g., "We're excited to welcome our new addition to the family!"), an expansion or enhancement made to a product or service ("The company is planning a major update with several new additions."), or even a physical structure that has been added onto an existing building ("They've completed construction on the new addition to the school.")