Someone will have to go to the shop in person for 100% confirmation. One can tell if it's the new one or not from the box itself unless they are doing some shady stuff like putting the old model in the new box. The reddit guy didn't have to open the box to find out if it was new one or not. There are 3 different things you can look for:
1. First is the 7 year warranty logo.
*encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcTCKLlazn5n6PSk1NMMCPsRIJmrdMvE7A_cBX9jkj_-MighjsmRkQ
This logo is at several places on the box. It's hard to miss it. Also this is something the shopkeepers can understand even without any tech knowledge. The old models had 3 year warranty logo.
2. On the features list it has Japanese Heavy Duty caps mentioned. The old models didn't have all Japanese caps. Also 7 year warranty will be mentioned in words here.
3. This is a little bit technical. On the power distribution (it's on the box) check the amp rating for +12V.
45A@+12V on EA550G Pro
54A@+12V on EA650G Pro
62A@+12V on EA750G Pro
Older models had lower values.
What I can confirm personally is that I actually have one
But it's a 750W model and I got it from the service centre in Mumbai.
*i.postimg.cc/ZRpSXVZP/psu1.png
Old 750W models had multi rail +12V.
*i.postimg.cc/YSJ7XJcq/psu2.png
All black cables. Old models had color coded cables.
*i.postimg.cc/RZZvq7Q9/box3.png
Mfg and Import is April 2018.
*i.postimg.cc/bvG89qBB/box2.png
*i.postimg.cc/HkvdMrBM/box1.png
I think Antec did some shady stuff with the naming because as far as I remember the old models were simply EA550G, EA650G without the "PRO". The first time I ever saw the PRO label was when the new models were released. They announced the new models in Dec 2017:
Antec Announces EarthWatts Gold Pro Series Power Supplies