Microsoft is working on a new tablet device called the Courier. We've seen something like it before though, and it was called Codex.
Full Story: http://arstechnica.com/microsoft/news/2009/09/microsoft-courier-tablet-prototype-reminds-us-of-codex.ars
Full Story: http://arstechnica.com/microsoft/news/2009/09/microsoft-courier-tablet-prototype-reminds-us-of-codex.ars