Officially announced: New OM-5!
Preorders:
In the USA at Bhphoto, Amazon, Adorama, GetOlympus.
In Europe at Amazon EU, FotoKoch, FotoErhardt, WexUK.
Reviews and Hands-on:
Explora, Dpreview, Head-to-head Comparison at Photographyblog, Review at ThePhoBlographer, Full review at Amateur Photographer. OM-5 vs E-M5 III vs OM-1 by Mirrorlesscomparison.
Youtube reviews: