Briefly: DICE Lead Multiplayer Designer Valerian Noghin shared an image on Twitter of a map called Hamada from the upcoming Battlefield V. At 1500m in the Breakthrough game mode, it's a pretty big map. Battlefield V comes out on November 20.
Regarding map sizes: this is Breakthrough for Hamada, with a distance of just over 1500m from Attacker's HQ to the Defenders' final 5th sector. I've added a view from Conquest C to better understand the scale. (BT layout is ░W░O░R░K░ ░I░N░ ░P░R░O░G░R░E░S░S░) pic.twitter.com/93MfHuRTzf
— Valerian (DICE) (@EA_DICE) September 15, 2018