I saw
this video with the designer and he revealed some cool details about the upcoming Black Series figures. It's old but a must watch.
A few highlights...
Vader will have cloth cape with real chain and his helmet will be removable (2 pcs)
Jedi Luke will come with two interchangeable front shirt panels, one folded, me zipped.
Jabba will be softer material and his mouth moves when you move his arms
Emperor Palpatine is in the works and will come with two sets of hands, force lightening and regular to hold his cane. Possible cloth cape.
By the way, I read somewhere the Shadow Squadron is a UK exclusive. Is that true?