The text under the image on instagram reads 'Discover the watch that winds back the years to 1957'. So for me that is the trilogy Seamaster not a new release, but happy to be corrected
That's how I read it too. Basically they are just advertising a watch that's been out for quite a while Haha I like the look of the mid 60s style as apposed to the "57" that is offered so if that makes me uncool so be it.
They're referring to the "modern" version of the Seamaster 300 Master Co-Axial, not the "trilogy" version. Here's their exact FB post, which includes a link. They just meant that it has stylistic elements of the original 1957 version. "Discover the watch that winds back the years to 1957. omegawatches.com/Seamaster300"
Omega has been advertising existing models in social media the past couple of weeks, nothing to be alarmed about.
The trilogy uses the old narrow Omega symbol on the crown and a Naiad symbol, that is not the Trilogy, its the SM 300 MC.