Every single game Namco-Bandai has released on the PS3 so far has failed to meet even their minimum sales goal.

But here are a few more clues from IGN.

"Bandai Namco is also including a ranking mode, and even has plans for downloads. The downloads will actually be kicking off well before the game's release. On Friday, the marketplace will take delivery of themes and icons, which we'd suggest you download immediately to show off your excitement of more "6" games coming to the Xbox 360. " - LINK

Need elaboration?

"Doug, you've been saying watch Namco, watch Namco in the mailbag. Now it gets rumoured about Katamari, Ace Combat, and another series coming out on 360 as well. Is this what you were hinting at? Or without saying too much, is there possibly more to come?

Yes, these are two of the three games I was hinting about. There should be more to come. At least one more. Not sure when that will be announced, though. Probably later this year."

--Douglass - LINK

Just a matter of time. Believe it. ;)