Most B&O stores already have them on display here in Denmark. Sounded like the first deliveries start next week.
My dealer confirmed for me today that AppleTV4 will fit inside.
The stand shown on the picture is the real deal, but is only one of four options. It looks much better in person.
The roller stand and wall mount was on display in the store. The two other options (a swivel stand much like the Avant one but without a motor and a tilted floor stand was due to arrive next week)
I like the design, but like most other B&O products pictures really doesn't do the product justice.
As others have commented, the general operation of the TV seems really slow. If I hadn't read about it before I went to the store, I would have pressed the remote several times for the same function, as the lag is so significant that you doubt if you even pressed it.
Overall it seems like a really nice product from B&O, but other than a larger screen size it doesn't really offer much over my Beoplay V1-40 with AppleTV4 connected. For me it's a substantiel investment, and I'm afraid that it will have a relative short life span, as it doesn't have HDR and it is the last TV before the LG-partnership.
So from my point of view the risk of the investment being outdated in a year or two, is not outweighed by the extra features of the Horizon. I don't plan on investing in WISA speakers any time soon (I don't have the space for them), and I don't have any 4K sources.
But people should really go see it in person. It's a solid product for anyone who doesn't have a modern B&O TV.