Not sure whether it's new (couldn't find it in forum search anyway)

http://www.google.fr/search?hl=fr&client=firefox-a&rls=com.ubuntu%3Aen-US%3Aofficial&hs=emH&q=gnome-voice-control+deb&btnG=Rechercher&meta=

Google can search into archived folders

Yeah, I saw the same thing the other day (about three days ago), but I thought GZip is different.

http://en.wikipedia.org/wiki/.gz#Other_uses

Results 1 – 10 of about 11,100,000 for filetype:gz. (0.05 seconds)
http://www.google.com/search?q=filetype%3Agz

I also noticed that if you clear out your cookies (CTRL-SHIFT-DEL) while you are on a result page and then reload, you will get the old design back. (the navigation bar on the top will still be there, though)