For March 2013 Visa Bulletin Prediction, please click here: http://topimmigrationnews.blogspot.com/2013/02/march-2013-visa-bulletin.html
EB Demand Data For February 2013 Visa Bulletin was released few days back. Please see details below:
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All totals are approximate data values as of Jan 8, 2013.
Link: http://www.travel.state.gov/pdf/EmploymentDemandUsedForCutOffDates.pdf