I don't know if hoylematt is right, but he said "completed files (those that have primary app done, secondary app filled out, secondary fee paid, college +high school transcripts in) will start to be reviewed by the review committee by 'Late September'".
If he's right, we'll need to send in both college + HS transcripts??
A couple months ago I emailed UCLA about the high school transcript. This was their response.
The 2012 AADSAS application cycle will be the first cycle where AADSAS will be completely paperless so our office may also make changes to the transcript requirements. Please wait for the email with further instructions, which will be sent to you after you submit the AADSAS application in the summer.