If anything, it will be more sad if the Snapchat rumour is true - because it's far, far too late. Nearly everyone's moved on - and they're not coming back.
If it is true, and I doubt very much that someone on a support account would know, it might mean that they are making one last real push with the Surface phone.
There's no chance WP will ever cater anything but a niche segment, but I suppose there is a small chance that this niche is large enough to be catered for for longer than just the next phone.