Nokia announced its Digital Pen, direct competition to the Logitech IO Digital Pen. The difference here is that with built in Bluetooth, this digital pen can transfer your writting to a Bluetooth mobile, and from there send it as a MMS.
Parts of the functionality is supplied by Anoto, as in the Logitech product. The nokia product uses a "Digital" paper, which contains a special grid and some control boxes the user can use to change the pen's behavior while writing or drawing.
According to Nokia's FAQ, the Digital Pen supports the following Bluetooth profiles: Generic Access Profile (GAP), Serial Port Profile (SPP), Dial-up Networking (DUN), Generic Object Exchange Profile (GOEP), and Object Push Profile (OPP). I think it's strange the PC software only allows USB connection. But I hope there'll be updates later.
Also, a new market will emerge: software for PDAs. According to Nokia "The Nokia Digital Pen can be used with organizers that are compatible for use with digital paper. However, such use requires software that is not included in the sales package of the Nokia Digital Pen.".