This may be more than you might ever want to know about agile publishing:
1) Here are links to the slides from the Tools of Change (TOC) panel last week on Real World Agile Publishing with Brett Sandusky (@bsandusky), Joe Wikert (@jwikert) (http://slidesha.re/wxfriM) and myself (@draccah) (http://slidesha.re/zsqYxO).
2) This is a write-up from Porter Anderson (@Porter_Anderson) for all of Tools of Change. Our agile session is towards the bottom. The whole thing is worth reading: http://janefriedman.com/2012/02/16/writing-on-the-ether-25/
3) I really liked this end quote from Brett: http://pic.twitter.com/7Q2o9Lu4
(Here's what it says if you didn't check out the link: 'The consumer does not behave as they say, they do not say what they think and they do not think what they feel.').
It was a point Eric Ries (The Lean Startup) made well and you may want to check out this video of his TOC keynote: http://bit.ly/x4g8PN
4) And Lynn Neary also mentioned agile publishing in an NPR story this morning entitled "At Last, They See: E-Books 'Democratize' Publishing" which is about Tools of Change (http://n.pr/AD04Go).
5) You may also want to check out the Hippo In Ballet Shoes, Or Greyhound On The Track? Applying Agile Methodologies To Traditional Publishing presentation by Kristen McLean (Bookigee) which covers both thinking and terminology. http://bit.ly/wadjm6