I like the Windows launcher, but it is nothing like Windows Phone, it's a completely different experience.
I don't expect much to happen come the new year. The phone will keep working. I think I've managed to find all the apps to do what I need and it still works, so it's fine by me.
I do have an iPhone and a couple of Androids in the drawer, just in case, but I still do not enjoy using them as much.
I wish they had made the Duo in a Windows version or at least optional dual-boot or something...you can make Android look and feel like almost anything but nothing will mask the mass data slurping and tracking that happens.