A Linux-based ARM laptop will come out and sweep the floor with current low-end laptops in terms of price, battery life, out-of-the-box functionality and user-friendliness. It will bridge the software gap to the other ARM-based mobile devices that are so ubiquitous nowadays, and the resulting software development trend will create a bottom-up wave that will extend far into the common desktop market. It all culminates with Microsoft halting development of Windows 7, and Vista thus marking the end of an era.
Then we'll talk about RISC vs. CISC, bitch. As a history note in computer science textbooks, that is.