I'm still for 'neko'. ;-)
But really: I wish Apple would just put codenames back where they belong - to the development stage. It kinda takes the fun out of codenames if they appear on the cover of the actual product. And really: Panther doesn't look, smell, act or feel like a cat. I've always been one to make fun out of Microsoft's everchanging version numbering scheme, but lately, I'm thinking that Apple, too, is suffering from 'marketing-hype'-illness.
Apple: Let's head on by going back. We don't even need the 'X' any more. Let's call the next version Mac OS 10.4. Or even better, let's go back further: System 10.4. ;-)