Arch Linux 2012.07.15 was announced on July 22nd and was surprised to see that AIF has been removed. From the announcement:
Most notable change is that AIF (the Arch Installation Framework) is no longer included but instead some simple install scripts are provided to aid in the installation process. This means a menu driven installer is no longer available and we rely more on documentation to guide new users.
Also, the image installers will now be signed and their signatures should be verified before use by using the following command (from an existing Arch install):
pacman-key -v .sig