The HWK-290 while a canon ship has
nofew known canon pilots - it appears in the Disney game Star Wars: Commander (SW:C)
Z-95 in White & Orange stripes alt paint scheme (as it canonnically appears in SW:C)
FYI, games and their content are not considered canon. but since both of these ships appear in other media that are Canon (movies, tv shows, canon books, canon comics), they are canon ships.
That being said, I would actually be surprised if a rebel vets set included an E-wing since that ship is not canon. with Disney now approving what a licensee can put out, I don't expect to see too many EU/legends based stuff moving forward (of course, an e-wing could show up in rebels, rouge one, or any of the comics or books at the drop of a hat.)
I would think that a rebel vets set would include a t-65, a t-70(both with alternate paint schemes) and a TFA Falcon with the rectangular dish and alternate paint scheme. it would be great if the set would have scum cards for the falcon but then it probably wouldn't be called rebel vets now, would it? ;-)