Engadget is reporting that the new iPhone could be available in 4, 8, 16 and 32GB capacities. Engadget pinpoints an approval received from the PCS Type Review Certification Board as the source of the information.

4GB to 32GB — that’s one hell of a range, but we’re hearing from a trusted source that new iPhones in 4GB, 8GB, 16GB, and 32GB capacities just garnered approval by the PCS Type Review Certification Board, the standards body responsible for certificating handsets for use with some carriers (AT&T, for instance).

Engadget goes onto speculate that Apple will use more than just capacities to help differentiate models and could make use of software to reduce features on certain models.