on the one side, i don't think that the scribus team has access to apple's systems before they are released...
on the other side, i wonder why you are talking about scribus "aqua"... there is no aqua version of scribus anymore... it's just an application for mac, now!
with a correct .dmg for installing it.
(this is important, because depending on the way you're installing scribus on mac, you may still see a -aqua package floating around, but it's probably a very old one! don't use it :-)