But until then, we can look at screens and learn what we can about the game. For example, levels will come in 7-, 9-, and 11-block-wide variants. "Decoration" options will become available for purchase using points obtained ingame. You'll be able to buy new backgrounds, block shapes, Vaus paddle shapes, and even sound effects.
The "Clear Game" mode is the normal Arkanoid mode in which you break all blocks to clear a level. It will contain 28 zones, each made up of five rounds, for a total of 140 rounds. And that's entirely separate from the "Quest Mode" which has different (as yet unknown) conditions for winning each round! So basically what we are saying is that there are a lot of levels in Arkanoid DS. That guarantees infinite playability for people like us who can't even reliably clear round 3 in NES Arkanoid.