The cloud city shot is just ... well magnificent!!! I to saw the glow from the lighsabers on Luke's face, but it is really faint. Looks good though! Tauntaun movement looks much more natural now.
The trailer is put together in a way that we can see some changes, but it still leaves a lot for the final release. I like that. I want to be surprised. 2010 seems ages away...but good things come to those who wait :)