That depends on the Mac – and the whims of Apple. Sometimes, a Mac might see an upgrade every year, receiving a new chip or a new chassis. Sometimes it might be years between variants, making it a little harder to predict. As a general rule, however, MacBooks tend to receive yearly updates, while desktop Macs remain on lengthier cycles before upgraded models arrive. Don’t let a machine being replaced by a newer edition deter you either – sometimes it's a great way of getting a great price!