Here - https://plus.google.com/112217333135124700456/posts/eeaYs2G8GHZ Richard Walden says the photo posted with this post is from the timezero event... no idea if this is confirmed or not
The Ingress Report this week - https://www.youtube.com/watch?feature=player_embedded&v=_I0rhpExcfI discusses agents making field art that may have links to the glyphs
Then in the Weekly chat hosted by @Thomas Greanias tonight - https://plus.google.com/u/0/102489350322422853902/posts/UKV5oV4xDJA - he mentions much about glyphs including one @Kelly Kolton may have seen that Hank had found and he has encountered them in the past (also in that chat was a number of great comments about dark XM, a topic to review in another post).
Again, if anyone has links or resources regarding the symbols, please comment and share!.
PS - another possible related piece was a leaked communication (need to find the exact reference) about an auditory piece Enoch was working on, one that might transmit these glyphs via audio not visual