Four Windows 8 television advertisements have leaked online, ahead of the operating system’s launch later this month. The advertisements, which first appeared on Israeli technology site TechIt, show off some of the main features of the operating system, but focus on the learning experience for new and existing Windows users. A number of early adopters have complained that the new user interface is difficult to understand, too complicated or not designed with traditional desktop PCs and laptops in mind. Many reviewers and technology blogs and sites have noted that the navigation is tricky and the learning curve is “steep.” Read the full story at CNET.