The popular set of development tools will soon make GBA development easier.
MetroWerks has announced that its popular CodeWarrior middleware will ship for GBA in April, and will be shown for the first time at the upcoming Game Developers Conference. CodeWarrior is a development environment that makes it easier to create games. It is often used by small companies with few technology assets, or by large companies who want to cut down on development costs and time. Hit the link above for more info.