Sorry if this is a known topic.
Found an interesting one. You can see this on Main Menu > System > Information > Check Tutorials > Limited-Time Events > ARKS BINGO CARD
First I thought this is some translation of its counterpart on JP, but there are some interesting difference like the bingo card name or the event period. A JP ARKS bingo card similar to this will be the JP Rainy 2015 Bingo (レイニー2015ビンゴ). The reward lists are almost identical, but the JP reward for 3 bingo, Safe Enhancer (+2) x2 are replaced with Great Enhancement Aid +50% x2 in this list. This is an understandable change, thinking the fact that NA doesn't have Old Type weapons.
The first page of the tutorial shows the bingo card, where we can read "D-1" as exterminate level 51+ Dark Ragne. This is the same as the back side of JP Rainy 2015 Bingo.
Will this predict a future event on NA server? Are they going to bring JP Rainy 2015 event as a 2020 event on NA? I regret to let you down, but I'm pretty skeptical about that.
Firstly, it's quite logical to assume that these tutorial images are prepared long ago, maybe as early as last year. So it may not match their latest schedule.
Secondly, this might be some test data prepared for their internal test of ARKS bingo, and have nothing to do with their real schedule.
So, I think the chance that this is a real one is rather low. But while given no info about the future of the game, we are allowed to make some wild speculations, I feel
EDIT: Another concern about this is that I strongly doubt if they can insert the related seasonal UQ under the current high pace UQ rotation...