Some people are confused: there is no anomalies on LA's screenshots.
In this video http://www.youtube.com/watch?v=xbtsTVrKI9s anoms were invisible, so i guess those are invisible during testing or screenshots capturing coz you don't want to spoil anoms positions.
But, you know, random anoms HAVE TO BE, else it will be boring and too easy.
Or, if anoms will be invisible... Weeeeeell, it will be much interesting