Ad 1, SDK is in place Ad 2, normal users wont use the emulator, that many did brick their device yet or did other stupid things by using repositories and bare .debs not ment to be for them... hints "you may brick your device" should stay as most avarage joe users are not able to test software for good and will brick their devices even with software they tested..."yeah it starts... lets install on to device... ah what should I do it doesnt boot anymore... the community sucks... why nokia doesnt fix this... n900 sucks... I want my money back..." and this will stay Ad 3 and 4, SDK is in place, well it is missing buttons and sensors but that could be coded for the SDK as add-ons.
if you are talking about windows SDK and a device shown in a window that you are bale to move around and press buttons and so, have fun...