There is already lot of delays and drama going on with Windows Phone 7 update. While users wait for their phone to get the NoDo update, Microsoft Windows Phone 7 team has placed an update page which gives you an idea how long you might have to wait to get an update for your phone.
Visit Windows Phone 7 Update Schedule Page. Here you can see status of update particularly for your handset. The status declared are testing, scheduling and delivering update. The list of handsets listed are Dell venue Pro, HTC Arrive, HTC HD 7, HTC Surround, LG Quantum and Samsung Focus. In your Windows Phone 7 change your location to US or International to receive this update when they are available.