The word "harbinger" means something that signals or indicates the approach of something else. It can be seen as a sign or a warning that something is about to happen or change. Full definition
The maufacturer of Harbingers of a New Age (producer of Vegecat KibbleMix) expressed shock at the results of the study and showed an intent to find and correct the source of the problems in the production of his cat food supplements. (veganoutreach.org)
I consider Sweden, The Netherlands, Great Britain and Canada as harbingers of things on our horizon here in the States. (religion.blogs.cnn.com)
A very special shout out goes to Dorothy Smyk of New Harbinger Publications on just completing her 25th year in attendance! (ibpa-online.org)