You are right, I-140 wont be affected by retrogression. It will be approved (if all documents meet the criteria) regardless. But no one knows about I-485. Because I see here people say that even after Nov 1, their I-485s were reviewed. I wonder if anyone's I-485 was approved after Nov 1? If so, would you share???
My only hope is that there are still some residual visa available and those who are here already may get their I-485 approved. My case status says that if 60 days passed and i did not hear anything, i have to call them. So my 60 days will be on Jan 1. If i dont hear none, I will call them on jan 2. I can request an inquire over the phone and I will get a written response. And then I ll let you know what they answer. If it is gonna be affected by retrogression, they should say that thre is no visa number available. On the other hand, if visa number is no available , what is the point to proceed I-485? That is kinda confused.
Anyway, keep your fingers crossed. We'll get there!