The official FRINGE website - Fox.com/fringe - added a new Horn glyph.
Clicking the glyph takes you to the ImagineTheImpossibilities.com website, where the content of the site has been replaced.
The first screen, is a list of coordinates (all in Iowa), and the text CASE_0091: EVIDENCE_0001 0711P 170708 NEXT
Clicking next takes you to "CASE_0091: EVIDENCE_0002 1200P 250708" which plays a video describing an incident of "The Pattern" where 11 groups of sheep in Iowa are lining up in giant circles. I checked the video frame-by-frame, and I don't see any hidden, apart from the usual mathematical formulas.