Late Tuesday night, Apple released the fifth major public build of the iPhone software development kit.

The build, a one gigabyte download, requires registered developers to sign into the iPhone Dev Center web site. According to Macworld UK, the new version includes bug fixes, adds support for the latest iPhone OS and includes the latest release notes.

In a move that dovetailed with the software release, Apple began accepting international members to the iPhone Developer Program this week. New developers are now allowed access to the iPhone SDK builds, technical support and will be able to write programs for later distribution on the App Store.

If you've tried the new SDK build and have any feedback about it, let us know over in the comments or forums.