I saw another Disney XD commercial advertising a few of it's upcoming live acion shows: Zeke & Luther, Aaron Stone, Even Stevens (heck yes!), and Suite Life of Zack & Cody.
Now, I came to two conclusions:
1) They're advertising and focusing more on their new shows, to draw in a new crowd. This is probably why Power Rangers isn't listed YET. But there is enough inside sources and information that leads us to believe RPM will air on XD.
2) If Power Rangers RPM isn't apart of the new Disney XD station...then it looks like they'll be airing RPM on ABC Kids (March 7th). Which in my opinion would be a bummer. Because I was hoping RPM could be apart of this "era."