BioWare's Ceo hints at PS3 Mass Effect 2, ME2 DLC - English and Polish.

[Mummelmann]

But what would be the point without having the first one available? The cool thing about the ME trilogy is that you carry over the plot from the previous installment!
Besides, everyone playing ME2 on PS3 would miss out on the story all together without the original which renders the point of playing a heavily story driven series moot...