I have no idea what the hell either of you are talking about, but 7057 is the latest publicly findable leak.
7061 and 7063 are only available to official testers and high up users at the moment.
7061 IS out in the wild (but only at the moment x-86) but give the torrents a rest.
'Cause if it was out in the wild, there's about a .01% chance I wouldn't know about it.
PS; As for compression, even with military grade compression, you can't get 7057 x86 past 1.8 GB, so good luck with that. Windows OS' are usually already compressed before they're put in ISO, that's why you see "Extracting files" when installing Windows.
For office, it's more than possible due to file types used, for Windows, uh, no. (Unless of course, you use a 'cutting' program to remove features and programs, such as vlite).