This page provides a product summary for each Apple model. The intent is to provide our best recommendations regarding current product cycles, and to provide a summary of currently available rumors for each model.

根据各款苹果设备的升级换代历史以及当前设备的发布日期，估算它是不是马上要升级换代了。网页顶部很直接的告诉你买还是别买，往下拉能看到各款设备的上次发布日期、历次升级换代日期、升级换代周期等详情。