First, as of (from what I can tell) the first of August 2016, Zpacks has stopped using carbon fiber shafts for their Arc backpacks. They are now using some type of fiber glass poles. I have zero further knowledge of any specifics, but I am sure details are going to come out as word spreads about this news. (and yep, you heard it here first... nobody... anywhere... has reported about this!)
Second, ZPacks has started attaching some kind of safety documentation sewn into their tents. I first saw this on a picture somebody took of their brand new tent. I would love to get a close up photograph of what this safety documentation looks like! Anybody remember this, that I posted back in April of this year. Interesting.