The US Consulate at Mumbai has released the Visa Bulletin for October 2008. It remains to be seen if this is the official Visa Bulletin since, at the time of this posting, there is no official posting on the Department of State’s website.
The key dates as listed on the Mumbai site are:
EB2: Current, except India (April 1, 2003), China (?), Mexico (?)
EB3: Most countries (Jan 1, 2005); India (July 1, 2001); China (?); Mexico (?)