Arkanoid DS is almost exactly what you'd expect. If you've always been a huge fan of the series, then you'll probably be willing to customize things here and eliminate most weaknesses. You'll possibly even ignore the distracting bar through the middle of everything because it means that now you can play on the road.
If you've generally found the franchise a bit on the shallow side, though, you can safely ignore this newest installment. While it's a competent package and faithful to its predecessors, it doesn't offer anything particularly compelling for the modern gamer. Unless you're a total newcomer, the packaging was right: you know the drill.