What does the Coca-Cola advertisement "Bottle Change" mean?

Coca-Cola is launching a promotional event. Industry insiders say that there will be prizes for opening UTC bottles. The lids of the drinks produced at this time are different from the usual colors. There will be prizes for more than 50 bottles. Change the bottle. It’s a term for an event. Coca-Cola does UTC every year, but the name of the event is different every year, and the theme is also different. End