Does anyone know about polycystic ovary syndrome and diabetes?

Link between both: Females with pcos usually have a degree of resistance to Insulin which contributes not only to the symptoms of pcos, but also increases their risk for developing type 2 diabetes.

They may be related: Women with polycystic ovaries related to Insulin resistance are at increased risk of developing diabetes, maybe even as much as ten times normal risk. This is one of the reasons it is so important to get treated and try to bring your Insulin levels back to normal.

Increased risk : Having pcos can increase your risk of type 2 diabetes by several folds especially if Insulin resistance is a component of your condition. You can discuss with your physician on how you can reduce such risk.