The Stormbird Gunship is an armoured versatile craft that combines the role of dropship, armoured transport and strike craft.
This is from an old White Dwarf and shows how Games Workshop back then thought the Stormbird looked like.
Back in 2011 I posted one gamer’s interpretation of that pencil drawing of a Stormbird. This was a huge model.
Over the weekend Forge World showed pictures at the Horus Heresy event of their version of the Stormbird.
Looking very similar to the Thunderhawk, that has been out for years, however as you can see it has a much larger hull, big enough to carry a whole Rhino. There are extra engines and looks like bigger wings.
Personally I would have preferred to see something more akin to the original concept of the Stormbird rather than something like the Thunderhawk.