Fiber router for 2018

Now have NVG 586 and copper. ATT will install whatever it takes for me to switch from copper to fiber (just recently available). Now I wish to be aware of any changes I need to prepare. For wireless transmission over the wired I now have. Security DVR, PC#1 & PC#2 WIRED; Printer, 6 Smart TVs (Directv), home phone and I pad + 2 iPhones WIRELESS. Everything we have is AT&T.