According to a recent review over at ARS Technica, the core apps that come with Windows 8 (People, Calendar, Mail, etc.) may be okay for tablet users, but most desktop users will probably avoid them in favour of what they used previously.

Which raises the question: if the idea was to move toward a common user interface for all Windows platforms, but desktop users avoid apps that use the new UI, has anything really changed? Application developers (including Microsoft) will be working on software that supports the new UI, but for now, nothing much has changed.