You're thinking about it the wrong way round. The ponysheeppoodle uses a new AQO. The client we have currently can load new AQOs already (most enemies are new AQOs). The uncertainty is in that they may have dumped the old AQO format entirely so the client might not read them after the 4/20 update.
I simply looked at the files in a hex editor. If you know what you're looking for you can tell the difference between the new and old formats at a glance heh.
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