BF1 custom gamemodes

Do the game modes follow each other in a constant order in the weekly rotation?

-Week 13 (2024.03.25): Back to Basics
-Week 14 (2024.04.01): No update
-Week 15 (2024.04.08): Rush - Hardcore

Do the game modes follow each other in a constant order in the weekly rotation?

-Week 13 (2024.03.25): Back to Basics
-Week 14 (2024.04.01): No update
-Week 15 (2024.04.08): Rush - Hardcore
-Week 16 (2024.04.15): No update
-Week 17 (2024.04.22): Urban Warfare

No, it's all over the place.

For example, we have Urban Warfare now but we also had it like a month ago. 

And in December we had B2B on Frontlines, which we got again earlier this year (forgot when exactly)

However, B2B on Conquest and Operations last appeared much longer ago.

@MrCostari 
Yes, you are right, because the Back to Basics game mode is BACK again.

-Week 13 (2024.03.25): Back to Basics
-Week 14 (2024.04.01): No update
-Week 15 (2024.04.08): Rush - Hardcore
-Week 16 (2024.04.15): No update
-Week 17 (2024.04.22): Urban Warfare
-Week 18 (2024.04.29): No update
-Week 19 (2024.05.06): No update
-Week 20 (2024.05.13): Back to Basics

Theres gamemodes every week

@GRIMVOLCANOO 
yes, the game mode and scrap exchange are updated one after the other manually by a Dice employee (on Mondays, with a break of one, two or more weeks).

for example, here is the list of 2024's Monday updates (or non-updates):

2024.01.01 - No update (New Year's Day, public holiday in Sweden)
2024.01.08 updated
2024.01.15 updated
2024.01.22 - No update
2024.01.28 - No update
2024.02.05 updated
2024.02.12 updated
2024.02.19 - No update
2024.02.26 - No update
2024.03.04 updated
2024.03.11 updated
2024.03.18 updated
2024.03.25 updated
2024.04.01 - No update (Easter Monday, public holiday in Sweden)
2024.04.08 updated
2024.04.15 - No update
2024.04.22 updated
2024.04.29 - No update
2024.05.06 - No update
2024.05.13 updated

the weekly game mode is Frontlines
https://battlefield.fandom.com/wiki/Frontlines#Battlefield_1

-Week 13 (2024.03.25): Back to Basics
-Week 14 (2024.04.01): No update
-Week 15 (2024.04.08): Rush - Hardcore
-Week 16 (2024.04.15): No update
-Week 17 (2024.04.22): Urban Warfare
-Week 18 (2024.04.29): No update
-Week 19 (2024.05.06): No update
-Week 20 (2024.05.13): Back to Basics
-Week 21 (2024.05.20): On the Frontlines

the weekly game mode is Conquest - Mixed Rotation

-Week 13 (2024.03.25): Back to Basics
-Week 14 (2024.04.01): No update
-Week 15 (2024.04.08): Rush - Hardcore
-Week 16 (2024.04.15): No update
-Week 17 (2024.04.22): Urban Warfare
-Week 18 (2024.04.29): No update
-Week 19 (2024.05.06): No update
-Week 20 (2024.05.13): Back to Basics
-Week 21 (2024.05.20): On the Frontlines
-Week 22 (2024.05.27): Conquest - Mixed Rotation

-Week 13 (2024.03.25): Back to Basics
-Week 14 (2024.04.01): No update
-Week 15 (2024.04.08): Rush - Hardcore
-Week 16 (2024.04.15): No update
-Week 17 (2024.04.22): Urban Warfare
-Week 18 (2024.04.29): No update
-Week 19 (2024.05.06): No update
-Week 20 (2024.05.13): Back to Basics
-Week 21 (2024.05.20): On the Frontlines
-Week 22 (2024.05.27): Conquest - Mixed Rotation
-Week 23 (2024.06.03): No update
-Week 24 (2024.06.10): No update
-Week 25 (2024.06.17): No update

However, among the custom game modes, the following are no longer alive in weekly game mode rotations?
-Fog of war
-Line of sight
-Eye to eye
-Blind delivery
-Armored kill
-Bleed out

i found a 2017 EA announcement about the last two custom game modes:

https://www.ea.com/en-gb/games/battlefield/news/the-road-ahead-jan-2017
We’re thrilled that you’re enjoying the official Custom Games and these will of course continue. You might already have tried Armored Kill, the newest custom experience featuring a Scout-free, vehicle-friendly spin on Conquest. On January 18 we’re going live with Bleed Out, a custom version of Rush where downed enemy soldiers respawn faster than usual and regenerative health is turned off.

-Week 13 (2024.03.25): Back to Basics
-Week 14 (2024.04.01): No update
-Week 15 (2024.04.08): Rush - Hardcore
-Week 16 (2024.04.15): No update
-Week 17 (2024.04.22): Urban Warfare
-Week 18 (2024.04.29): No update
-Week 19 (2024.05.06): No update
-Week 20 (2024.05.13): Back to Basics
-Week 21 (2024.05.20): On the Frontlines
-Week 22 (2024.05.27): Conquest - Mixed Rotation
-Week 23 (2024.06.03): No update
-Week 24 (2024.06.10): No update
-Week 25 (2024.06.17): No update
-Week 26 (2024.07.24): No update

However, among the custom game modes, the following are no longer alive in weekly game mode rotations?
-Fog of war
-Line of sight
-Eye to eye
-Blind delivery
-Armored kill
-Bleed out

i found a 2016 EA announcement about the first custom game mode "Fog of war":
https://www.ea.com/en-au/games/battlefield/news/battlefield-1-the-road-ahead
Fog of War: Intruducing Custom Games
As the first Official Custom Game, Fog of War will premiere at Battlefest. In this unique Team Deathmatch experience, you will be challenged by limited sight as you’re fighting in fog with the mini-map and soldier name tags turned off. You’ll find Official Custom Games in the Battlefield 1 Multiplayer menu.