Both new TS fairway models feature similar technologies as the drivers including extremely thin crowns that are 27% thinner for lower and deeper CG locations thinner clubfaces with variable thickness for more ball speed distance and forgiveness on off center hits and better weight distribution for higher MOI and stability.
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.
Other features include a low compression core for excellent feel and low-spin distance on long shots and a 338 speed dimple pattern for less drag improved launch and solid performance in windy conditions. Less sidespin for straighter shots is an additional benefit a wide variety of players will appreciate.