After my successful upgrade from GalPon Minino Artabros 2.0 to 2.1 RC, I downloaded the new version of PicarOS Diego, revision C.
After using dd to make a bootable USB, the first thing I noticed when booting Diego was a new GRUB 2 screen. Unlike the previous one, this one shows Diego's face. Too bad its colors are too dark for a children-oriented distro, but I take it the idea is that children won't get to see it too often (or ever!)
Soon enough, I was greeted by PicarOS desktop. I did notice a few extra icons there, and a new feature added with the purpose of making computing more fun to children: the little oneko that appears on your desktop and chases your pointer while the computer is thinking. This little cat also morphs into a dog, a little girl, and even Tux! It will surely keep children thrilled!
So far, those are the most evident changes I've noticed. I have to keep testing version C to see what else is new. I'm glad to see the positive development of MiniNo and PicarOS!