If you have not filed I-140 yet and plan to do so plus take advantage of the current July visa bulletin to file I-485 concurrently:
The August 17 extension for filing I-485 is given by USCIS only to those whose priority dates are current as of July 2007 bulletin. There are no visa numbers available in August. If you submit your I-140 in August, you will get an August priority date, which means you will not be eligible to file I-485 concurrently. It is very important to file I-140 in July in order to take advantage of the July bulletin. You will not be able to file concurrently after July 31.
The August 17 extension for filing I-485 is given by USCIS only to those whose priority dates are current as of July 2007 bulletin. There are no visa numbers available in August. If you submit your I-140 in August, you will get an August priority date, which means you will not be eligible to file I-485 concurrently. It is very important to file I-140 in July in order to take advantage of the July bulletin. You will not be able to file concurrently after July 31.