Longhorn 505x plus series

[dixieLH]

on youtube video with Jim Allchin interview, theres 2 putters running, and he says
hes "currently" running 5059 as main, and beside is "older" 5054
and i know there were photos of 5060 somewhere taken

so my question would be, do these builds even if unleaked, do exist as ISO ?
dont care who has them, just if they are out there ?

[TinaMeineKatze]

Probably not outside of Microsoft. I've been watching these releases for some time, and I have never heard of these being existant in some collectors collection. But of course I may be wrong.