Engadget is reporting Microsoft has confirmed Courier on it's JobsBlog:
Well this is something. According to Peter Kafka at All Things D, as well as a few tipsters, Microsoft has all but confirmed the existence (and likely actual launch) of the Courier tablet. In a post on the site by Thomas Kohnstamm (or The JobsBloggers, hard to say) touting Microsoft innovation, this passage was originally posted:
Do you already know everything about Project Natal and the Cloud? Is Blaise Aguera y Arcas' jaw-dropping TED talk on augmented-reality Bing Maps and Photosynth last month's news? Then check out some of the online chatter surrounding new releases of Window Phone 7 series handsets, Internet Explorer 9 and the upcoming Courier digital journal."