HP has announced the $399 Photosmart eStation printer (previously known as the HP Zeen). The Photosmart comes with a 7 inch Android tablet that can be used to interact with the printer controls. The tablet is removable and you can use it to surf the web and download applications too.
The tablet has a Freescale i.MX51 CPU that runs for 4-6 hours on a single charge. When docking it to the the printer, you can use the tablet as a digital photo frame too. The tablet runs on Android 2.1.