WHAT DOES AAE FILE MEAN?

So it seems like this can be a new gas to help Photograph edits from the iOS8/Yosemite ecosystem. Given that Aperture has not been up-to-date, at the very least thus far it seems that on-mobile phone Picture edits are gonna wander off at least till Yosemite drops...and maybe in no way for Aperture.Backup Consistently: In advance of deleting any AAE