I changed out my tires at the beginning of this season with the new Diablo Rosso Corsa. I've got about 4k-km on them now and they are still in great shape. No squaring off, still grip like crazy, tread is in great shape. A buddy of mine changed his tires around the same time with the new Pirelli's and he has about 7k-km on them with the same result.
I was expecting the typical trade off of grip for tire life that I had with my other hypersport tires however that doesn't seem to be the case. 5-7k-km seemed to be the life of most of my other rear tires before noticeble wear and squaring off. (when running hypersports)
Would love to hear about the experience of others running this tire especially if you have more than 7000 km. Trying to figure out the life expectancy of this tire.