Just wondering… any news about it?
no
damn
You can sign your apps successfully using the shell tool. You need to edit the plist manually but a friend just did it and was accepted this week.
Ah yeah, I was reading about a similar case (maybe its your friend) at this link.
Is this what it takes to make a Unity game fully App Store-compliant? I read something about receipt validation… I’m asking because I’m mainly a 3D artist, not a programmer, and you know the rest: I have a game idea, I’m developing the art, learning some scripting to see if I can make a few bucks out of it using the Mac App Store… yadda-yadda… and I’d like it if someone would broaden the subject to me. 
I hope Unity adds Mac App Store support soon! I think adding Mac App Store support to the existing iPhone Advanced license would add a lot of value to the product line.