For those of you that are in the US and planning to go the AOS route:
(Particularly important for those from the PIC countries and Mexico an don tourist visas.)
Be aware that as soon as the visas are no longer current, USCIS will not be accepting the I-485 petitions. They are not expected to be current next month, and also not much further into this month. When they are gone, USCIS will make a posting that the Visas are no longer current and will not be accepted as of that date. They do not give advance notice of a few days or so in advance. Just notification of when they stop accepting them.
Make sure that you are on top of things with your attorney, if you wait or do not follow up, you will need to go home.