I, of course, would have preferred a .deb link next to the .exe and .dmg, and, in my cynical fashion, interpret the more obfuscated route to obtaining it to be either an expression of their wish for OS X to remain the face of unix on the desktop or their denial of the fact that Ubuntu simply is linux today.
All the linux users I meet at school, at church, wherever else I am, they don't use Fedora, they don't use SuSE, they don't use Mandriva, etc. They all use Ubuntu, except my friend Justin who is a Kubuntu user. Still, different DE, same OS. And from Google:
Should look like this:
Windows (msi) _x86_ _x86-64_
Mac (pkg) _intel_ _PPC_
*ubuntu (deb) _x86_ _x86-64_ _other_
YaST and Yum repos awaiting sponsor
Though really, if they wanted to throw rpm there too, can't say I'd mind that much-- just as long as they don't use its existence as an excuse to hide the .deb away somewhere.