Apple has today released the iPhone SDK Beta 3.2 beta 4 to aid developers looking to build applications for the forthcoming iPad.

The update has been released via the iPhone Dev Center, the latest version coming just weeks after Apple put out the beta 3 edition.

Differences between the two releases are yet to come to light, though it is expected that further updates will drop every two weeks, putting the next release in line for a debut just in time for the iPad's US launch on April 3rd.