I visited the Omega dealer recently thinking about buying a new Aqua Terra Annual Calendar when I noticed a trend had basically reached completion. It seems that Omega has decided not to use borders around their date (or day/month) on any new men's watch. This isn't a new thing as some models didn't have these frames already, and some recent models came out without them (the current generation Aqua Terra GMT for instance). I'm using Dimer's photos, from Ace Jewelers, to show what I mean, original thread here: https://forums.watchuseek.com/f20/our...ad-856278.html
The Annual Calendar used to have a frame around both date/month.
Quite liked the new anti-magnetic AT, but again, it lost its date border.
Of course the Deville and Planet Ocean already lacked date windows.
I actually really like a well designed date window, like on my current Aqua Terra:
So I think I will probably stick with used Omegas for aesthetic purposes. Not that they're hideous without it, but I definitely prefer the old look.