The new Z H85 hybrids are designed with a larger profile for more confidence at address and more overall forgiveness. The same stepped crown design featured on the Z-series fairways is also in play with the hybrids producing a lower CG for improved launch and distance characteristics.
The newest version also features a forged construction similar to the Z 585 and Z 785 irons but is built with a hollow club head and high-strength face insert that allows the club to behave more like a wood. What this means is higher launch higher flight and more distance for a wide variety of players.
However I’d say it’s unlikely that a new iteration of the Mini is coming any time soon. Modern fairway wood designs like TaylorMade’s M3 and M4 for example are so good and so long that former Mini players can simply find the right fit and most likely get the same or even better performance.