We received some samples from Petzl. They're nice helmets. It seems to me like they're an upgrade to the Ecrin series. Like the Ecrin series, the have 3 models, the Vented (=to Roc), the Best, and the ST. I have not given the helmets a thorough look yet, but what I noticed very quickly was the new suspension system. You can really get the fit you want with this helmet. It also has suspension dial in the back, which isn't new, but I like it anyway. The other thing I noticed is that the vented model has vent blocks built into the helmet, so you can close up the vents on a cold day, without have to jam external pieces in there.
A few places have already started advertising the helmets, but they will not be available until February.
-Sean