C-3PO is armed. At first it reminded me of that stupid scene in AOTC and I groaned, then I thought about it a little more. Could it be that the Resistance is so short on manpower that they have to resort to arming their protocol droids? That's kinda cool and perhaps it could be quite funny.
Kylo Ren's got his mask back, looks like he's fixed it with some red crystalline material, looks cool and intimidating. Him breaking his mask was something that really irritated me about The Last Jedi, so I am pleased. Also, he's using his lightsaber in a back-hand style, is he gonna show off a new fighting technique? I hope so.
KNIGHTS OF REN. Hooray! Hard to see them properly, but some of them have got some badass looking weapons, should lead to some very cool fight scenes. Hopefully their appearance is worth the wait.
There are some new stormtroopers, almost look like a hybrid of the Royal Guards, Death Troopers and Clones. I'm not expecting much of an appearance from these guys, but I really like the design.
Can't tell if Rey is using Luke's lightsaber and she's repaired it or she's using her own custom-made one, but is it just me who sees a white blade? That's pretty unique to the film series and goes well with her new outfit. Could it be symbolic?
And, finally, the new characters. I don't know much about the first one in the purple spacesuit, but the second is apparently Lando's daughter. Other artwork shows her armed with a weapon similar to a bow and arrow.