As the first Apple Silicon notebook will supposedly be a MacBook Pro, that suggests to me the Arm MacBook Air will handily outperform the Intel 13" Pro so they needed to get that one out first. This does leave me wondering about another Intel 16", Jon Prosser suggested the next iteration would be an Arm machine, for what that's worth. If they were bothering with 10th gen chips I would really have expected them by now, probably when the 5600m graphics update dropped. Tiger Lake is around the corner by now, I expect if they're doing 'one last refresh' with Intel that's what they will aim for?