It is still being rolled out. Definitely try to get as much engagement as you can on your ads and page. This data wont go away as it is not pixel related. What is your attribution? If you are outside of 7D click 1D view you will probably be hit a bit harder. Definitely do data pulls for the last few years with all the different windows so that you have something to compare to YoY. Also, if your clients are ecomm make sure they have FB and IG shops set up. Both platforms are becoming more of a marketplace probably because they expected their tracking and data would be impacted eventually. Best of luck!