I do hope, however, that this takes place after Fusion and is basically Metroid V. Remember that Metroid IV left on a huge cliffhanger: pitting Samus against the rest of humanity, and infused with Metroid DNA. Even though Fusion had (IMO) pretty lame gameplay, the story was one of the best in the franchise, it would be nice to continue where that left off.
As much as I want a Metroid V, I think Other M will be set before Fusion.
See the "Any objections, Lady?" line. It's Adam. Unless it's a flashback...
I'm pumped for Metroid and Golden Sun... maybe Glory of Heracles, but I have to hear more about this one.