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I have no idea how recent this is, but here are about ten web pages with what IBM has to say on user-centred design.

“User-Centered Design is a well established process that has been widely adopted by many organizations to deliver products that meet users’ expectations. IBM has regularly enhanced this process, which has now been consolidated within the broader framework of User Engineering. For completeness, the key information on User-Centered Design is retained for reference.”

(via CPH127)