[keg in kc]

This seems to be the latest I can find:

HBO and 'A Song of Ice and Fire': It May Still Happen

Posted on 3 March 2008 by James Cormier at 10:53 PM

For those of you wondering about the rumored HBO production of George R. R. Martin's epic fantasy series A Song of Ice and Fire, The Wertzone has a useful round-up of the official facts to date:

The deal for HBO to option the television rights to A Song of Ice and Fire was ongoing in 2006 and concluded in January 2007, when GRRM announced the news on his website. Subsequent blog entries confirmed that the writing of the pilot script had commenced. Prior to the start of the Writer's Guild of America Strike in November 2007, writer-producers David Benioff and D.B. Weiss had completed a pilot script which GRRM had signed off on. This script had been passed to HBO, who were considering it and running budget estimates for the series at the time that the strike began. As with all Hollywood television projects, work on the adaption was suspended until the strike concluded in mid-February 2008.

Essentially, since HBO's option has yet to expire and the writers' strike has concluded, there is still a very real possibility of it happening. Wertzone goes on to describe the proposed scope of the project:

No final decision has been made but the tentative plan is for HBO to adapt A Song of Ice and Fire as a series of 13-episode television seasons (potentially seven seasons in length, one for each novel). Whilst the project would be high-budget, it would not be as expensive as HBO's previous major costume drama, Rome, and would probably be filmed in Eastern Europe or perhaps New Zealand due to the lowered production costs.

As always, take anything you read on the Internet with a grain of salt: although Werzone seems to have based their information primarily on official sources, nothing is official until you hear it from either GRRM or HBO.