Apple has coverage by Joe Cellini and and Oliver Peters looks at post-production of The Curious Case of Benjamin Button:
'This film received the benefit of other digital tools. According to Angus, “One of the scenes in the film is a fable told by Cate Blanchett. We were looking for ways to set this scene apart and decided to give it an old movie look, since it’s a movie-within-a-movie. To that aim, we settled on treating these shots with Magic Bullet Looks. The final version that appears in the film was processed through [Adobe] After Effects where we ‘baked in’ the effect. There are also a few other scenes throughout that received a little Magic Bullet love.”'
Also, 'Button' is on the cover of Cinefex #116.
Update: Flippant News noted that Nola.com posted a seven-part series of video vignettes with director Fincher and others.
Update: How Benjamin Button Got His Face | Video on TED.com