There is a file online called "MacOs8.5 Tips&Tricks"DO NOT DOWNLOAD IT. If you did download it, don't run it!!! It is a Trojan Horse AppleScript file that is, according to Ric Ford's MacInTouch site, deleting files from hard drives.
Remember, 8.5 is not released yet.
More information is at http://www.macintouch.com/ - Alternate site - Trojan Horse
Tracy