I haven't heard of anything but I suppose it depends on the location of the cracks. Anything major near the centerboard trunk, chain plates, or rudder locations is problematic. Inspect yearly especially after the winter and after the season.
I spoke to Hunter a few weeks ago regarding bottom prep and casually asked why the halt on production. Economy, demand, and practicality are the main reasons. Economically maintaining a composite form process with other traditional methods is expensive. Evidently the 216 is the largest single pour form they have. Demand for a "plastic" boat is not a preference of many potential buyers, so the demand is marginal. Practicality of maintaining the composite process is no longer viable in this economy given the petroleum based nature of plastic as well as other ACP production materials required. So they had to pick 1 practical approach given these factors.
Based on all this and the frequency of cracks reported in the composite I suppose they have decided its not worth the R&D to improve the process.