I've had a number of sessions on the new KT Astro wings in 3m and 4m and here are my impressions so far in comparison to the previous KT Direct Drive models I previously rode:

KT Astro vs Direct Drive:
-similar, possibly better low end (very grunty)
-better high end stability
-new radial panel layout and excellent window position/material
-ergonomic boom is very nice to grip and lends to the general feeling of improved stability/stiffness
-surf handle is stiff, large, and perfectly balanced for drifting on waves
-rolls over very easily for tacks
-improved speed/upwind angle performance (leaner profile)
-Heavier than previous models but the boom effectively gives more options for controlling the slightly heavier weight and momentum
-New fluoro colors really stand out on the water (high vis safety benefit)
-Astro leech can motor a bit sailing overpowered upwind or when not fully sheeted in
-Longer/larger form factor when in its bag due to boom.

Overall the new Astro is a distinct improvement over the previous DD wing in all areas, with the only trade-offs being slightly more weight and some motoring of the leech. They are a great-performing, all-round option for surf, jumping, and free-riding with a robust construction.

Riders: Nathan Berger, Kane DeWilde
Location: The Hatchery
Curran photo

Useful windows too by the look of it.

Windows are perfect placed and from PVC (much better for folding than any other material, no wrinkles and soft).