I think the reason they showed a new ship was because Samus's gunship couldn't penetrate the Phazon rich atmosphere, maybe because it was more of a shell. I think the basic enemy (i.e. Zoomer in Metroid/Zero Mission) will be a glob of Phazon. I also think that Dark Samus/Metroid Prime still won't fuggin die! She/he/it will probably mutate into the X parasite, go back in time, and infest SR388 or something...