VNAFlyer previously posted an Instagram photo of the purported uniforms captured on the computer screen of an unknown person.
The traditional Vietnamese ao dai is preserved, though now uniform colors are based on the cabin being served: blue for economy, and gold for business. The new uniforms can already be seen on some international routes.
What's most striking to me actually isn't the flight attendants posing in their uniforms. It's that they were photoshopped onto a background of a 787 cabin, and the seats shown are decidedly different than the ones that were "officially released" by VNA:
Honestly, the doctored photo with the FAs could be more accurate, as they show an interior color palette that more closely resembles their current cabin, as well as the rendering for the A350 cabin:
I will follow up with what I find out...