It's because it's stuck in the "dev stream" thing that CIG is also sorting out so they can have more stability on their side and that too won't be done till 3.5.
I may be slow but the flight model got pushed back too.
https://robertsspaceindustries.com/spectrum/community/SC/forum/3/thread/the-only-thing-that-truly-matters-in-3-4-is-the-im/1638696
I'm sure the people who got it for a multi-role ship like the sales page said it was were a bit confused. Clearly gunship and dropship were the only two roles intended even though it can carry vehicles :|
All I read from the Q&A was that vehicles only need a physics grid to sit in a ship. I emailed Chris Roberts asking for a 12 pack for tanks so I can fill my Idris.