The status of the USA economy is on the news just about every day...About 2-3 weeks ago, Barack Obama had a press conference, informing citizens of the serious debt crisis the USA is facing. The debt is over a trillion dollars to which he proposed to reduce in 12 years. He went on to say that it will continue to affect the economy which is already bad and increase the unemployment rate.
Also, I've read some where that the DV-lottery criteria may change. They proposed to allot the DVs to students who are already in the USA with advanced degrees. Sometimes rumors are not far from the truth. So do not be surprised if it materializes. Just keep a close eye on the USA's economy over the next few months or until registration for DV-2013 which may begin in October.