Rogue One set photo's and OT Stormtroopers! If you consider that spoilers, don't look...
http://makingstarwars.net/2015/08/f...rs-on-set-from-star-wars-anthology-rogue-one/
But are the special editions canon now?
If they brought out the unaltered blurays and said "this is how it was, and this is how it is" Then the SE additions could vanish overnight.
The SE ar considered the ONLY canon version of the films at this point.
Who says they didn't use more than one type of landing craft at that time?
Well knowing the EU is out we can still take a wild-arsed guess about a few things:
The SW universe is old,very old so having ships around that could be hundreds if not thousands of years old is possible.
The Empire may have the best-and-latest but considering the size of the SW universe who's to say the farther out units don't have older gear? it's still good and I don't see the Empire selling off stuff surplus.
The thing could be from the Clone Wars for all we know,maybe a secondary lander that was used in remote ports,hell maybe it's a native design they used in backwaters and isn't really standard.
I don't mind them changing the lander because the SE lander was a stupid, ugly design. It was like some modeling kid's first kitbash. Sticking a Lamda cockpit and wings on a big, out of scale blob. Laaaaazeeee.