Mt Spokane Photography said:
In the past, lots of pages have been created for non existent cameras. The purpose is to draw those searching online for a potential new model to their site.
It means little or nothing.
B&H and Adorama have had search terms that lead to their sites as well.
The blank page has served its purpose, someone is helping advertise their site.
But I believe authorized resellers have a hard gag order to mention anything about the product as a listing on their site. So they have some click-bait for a google search, but it only brings them to the main site. Having an
actual 5D4 listing* before the announcement -- even if just a pre-order -- would be viewed very negatively by Canon corporate.
I think DR posting their link is less dangerous for them as they are (to my knowledge) not authorized resellers, so they can pull shenanigans like this.
- A
* for the main article, i.e. the 5D4 rig itself; 3rd party accessories hedging that they will work with the 5D4 before it is released have certainly happened at B&H and Amazon in the past.