The Fed proposed amendments to Regulation E on 11/20/2009, with a short comment period that expired 12/21/2009. The proposal was published at
74 FR 60986.
Since the Credit CARD Act was enacted on May 22, 2009, and does include a nine-month delivery date for final rules, which the Fed has clearly missed. However, the mandatory effective date for the rules is August 22, 2010. I think that the Fed will manage to squeak by and get its final rule published in time.