I get what it means but I was understanding that today was the last trading day for it.That is just what they call it everyday when they figure out what the "final" price is for each contract.
Also be very careful with the ETF's in this type of market. The earlier poster was correct when USO had rolled out 1-2 weeks ago. However, it still loses money on the contango (difference between the front month and the next) which in this case is HUGE (like $40 / barrel). So it will lose money every month, especially when the spreads are this big.