The official WP7 emulator uses 800x480 resolution. The only info I can find on planned WP7 phones (eg Samsung Cetus i917) share the same resolution. While I realise the appeal of writing resolution-independant programs, I'd really rather focus on pushing a known set of hardware to the max than sacrificing features and efficiency for one-size-fits-all.
Is it fairly safe to assume 800x480 will be widely adopted as the de facto standard for WP7 devices and to code accordingly? Or are there reasons (other than the obvious) that I should be considering variable display resolution in my program designs?