The NVC has started sending letters indicating it is experience a significant increase in its workload which has resulted in slower processing times. Below is the text from a letter we received in the mail today for an immigrant visa (green card) case:

Dear Sir/Madam,

The National Visa Center (NVC) received your documents on 25-JUN-14. We are currently receiving an increased number of approved petitions from U.S. Citizenship and Immigration Services. As a result, we are experiencing increased review times for documents received. We expect it will be at least 60 days from the date we received your mail before we complete the review of your documents. We will notify you when we review your documents. We are working to reduce these processing times and we appreciate your patience.

This should not come as a surprise, especially given the jump we have seen in some of the priority date categories. Significant movement in the cut-off date means more cases are being processed through the NVC.

It is worth noting that several of the dates included in letters sent to us over the last week or so have not been accurate, in terms of the dates on which documentation was sent to the NVC. Do not treat these dates as gospel in terms of getting some kind of response in 60 days.