GRRM’s official site has just been updated with a status report. A Feast for Crows is still being written and there is no certain publication date yet. However, as we have already reported, an excerpt from the book will appear in issue #305 of Dragon Magazine. Called "Arms of the Kraken", it makes up part of the prologue for A Feast for Crows (the prologue is not just one chapter this time around, but rather several with different viewpoints in each) and deals with the struggle for the Seastone Chair following the death of Balon Greyjoy.
GRRM has already read several chapters from A Feast for Crows at various conventions, and reports on these can be found here. Among the chapters being reported on are two other prologue chapters, these two set in Dorne. As it happens, we have actually read the second of these two chapters, and we are happy to report that it was a great read. Well worth preording the book already from either Amazon.com or Amazon.co.uk.