A teaser.....just like a matryoshka doll!
Interesting, teasing ....snippets!

The airing dates:
Supergirl, Dec 8
Batwoman, Dec 9
The Flash, Dec 10
....nail-biting cliffhanger....
Arrow, Jan 14
Legends of Tomorrow, Jan 14
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I'm looking forward in great anticipation to this one! Especially for Batwoman and all the big changes it brings to the Arrowverse.
The Arrow might not be the only one ....

You would be correct. it is likely that more than one character will be knocked off. My bet is Brandon Routh's Superman (the Kingdom Come version featured in the clip) will be a casualty. There may be others as well.

In the past I thought the Legends of Tomorrow would end with this crossover. But they are just starting their season with it.
I still have the weird/bad feeling that it might hit another "big" one.... Flash or Supergirl.
Flash has the best ratings on the the CW which leaves.....
That would made a huge IMPACT on the arrowverse and the fans!
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P.S.: Some promo pictures in a video....but PLEASE turn off the speakers before you watch it!
Otherwise your health is in danger.....

More news on the crossover!

Here is the poster:



Seems like Batwoman got the best spot!
But weird that they used that old promo picture of her....she doesn't even have that cowl anymore.
She has a new cowl since episode 3, the one from this poster was only seen in the last years crossover (and some promos).
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Well, last years crossover was already big, but THIS one takes it to a whole new level!
So thrilled to see what will happen to the Arrowverse!
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And another teaser:

The FINAL trailer is here:



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What do you folks think about it?
Let's hear it, the keyboard in front of you can be used for typing....

So, I've binged watched all the episodes of the other three shows, so I know who's who when Crisis airs.

I haven't seen any discussion specifically about the "keys" that Wells uses to open the portal (that scene that we see at the end of the final pre-Crisis episode of all four shows). Maybe it's obvious to everyone else, but I had to look at it a bit. The trailers tell us that there are seven heroes who can stop the Crisis. There are seven symbols. Clearly one symbol for each of the seven heroes. For clarity, let's number them A thru G, left to right.
Notice the order in which Wells taps them... if we line those up with the order of the shows on which the episodes air, and throw in the missing shows, here's what I think the symbols mean:
F - Supergirl (Superman?)
B - Batwoman (Batman?)
C - Flash
G - Arrow
A - Legends (White/Black Canary?)
D - Black Lightning
E - ??? (Stargirl?)

Anyone have alternate ideas, thoughts?

Welcome to the forum!
Haven't seen the first episode yet, will do it later today.
Interesting thoughts.... but you only have 5 shows, but 7 symbols. I guess there is a specific order in which the heroes will enter the crossover or have do do certain things to save the Multiverse. I don't think that the order of which the shows air will have something to do with that.
But honestly I'm just guessing now, maybe we will know already more after the first episode.