Microsoft intends to make a major announcement today with RR Donnelley & Sons, a commercial printer of books, catalogues, magazines and other reading materials.

Microsoft will not say what the announcement is about, but claimed it will be of "historic proportions" and could "mark a new era in bringing words to life".

The news will be delivered at a press conference scheduled for 11 a.m. EST in New York by Dick Brass, vice president of technology development at Microsoft, and Mark Bayer, a senior vice president with RR Donnelley.

In August, Brass spoke at the Seybold publishing conference in San Francisco, where he unveiled Microsoft's ClearType technology. ClearType is designed to improve the resolution of on-screen text, and is expected to spur the use of so-called "e-books", or small computers used to display novels and other reading matter.