an updated model, the dd-10ex, came out in 1992 or 1993. the manual that comes with it gives a copyright date of 1992. unlike the dd-1ex, the dd-10ex can also play audio files. the british version comes with two discs: one with the "thomson electronic directory" for april 1992 on it, and one with the "pocket interpreter 5-language conversation book for travelers" on it. a dd-10ex was in an exhibition called "the book and beyond: electronic publishing and the art of the book", which was held at the victoria and albert museum, which is in london, from april 1995 to october 1995. the exhibition also included a cd-rom for the data discman, which is called "the library of the future", and came out in 1993.