The storyboard does indeed picture it as a tie bomber type craft. But it’s really hard to make anything out even in the HD video. Basically in the close up (if you can call it that) on Needa’s shuttle it has a long black strip across the back.
The shot in the trailer seems to also have this long black strip across the back. That is all I am saying.
The wings appear to be totally different unless they could some how fold in to that shape?
Probably clutching at straws With this… but let’s hope this was the secret design that we have never seen until now 😃