Here is the full list of the iOS6 Beta links which leaked right before the WWDC via pastebin and some chinese websites:

http://adcdownload.apple.com/ios/ios...__10a5316k.dmg
http://adcdownload.apple.com/ios/ios...__10a5316k.dmg
http://adcdownload.apple.com/ios/ios...pdate_beta.dmg
http://adcdownload.apple.com/ios/ios...__10a5316k.dmg
http://adcdownload.apple.com/ios/ios...__10a5316k.dmg
http://adcdownload.apple.com/ios/ios...__10a5316k.dmg
http://adcdownload.apple.com/ios/ios...__10a5316k.dmg
http://adcdownload.apple.com/ios/ios...pdate_beta.dmg
http://adcdownload.apple.com/ios/ios...__10a5316k.dmg
http://adcdownload.apple.com/ios/ios...__10a5316k.dmg
http://adcdownload.apple.com/ios/ios...__10a5316k.dmg
http://adcdownload.apple.com/ios/ios...__10a5316k.dmg
http://adcdownload.apple.com/ios/ios...__10a5316k.dmg
http://adcdownload.apple.com/ios/ios...__10a5316k.zip
http://adcdownload.apple.com/ios/ios...__10a5316k.zip
http://adcdownload.apple.com/ios/ios...__10a5316k.zip
http://adcdownload.apple.com/ios/ios...__10a5316k.zip
http://adcdownload.apple.com/ios/ios...__10a5316k.zip
http://adcdownload.apple.com/ios/ios...__10a5316k.zip
http://adcdownload.apple.com/ios/ios...__10a5316k.zip
http://adcdownload.apple.com/ios/ios...taguide_d1.pdf
http://adcdownload.apple.com/ios/ios...are_update.pdf
http://adcdownload.apple.com/Safari/...ninstaller.dmg
http://adcdownload.apple.com/Safari/...w_for_lion.dmg
http://adcdownload.apple.com/ios/ios...__10a5316k.zip
http://adcdownload.apple.com/ios/ios...__10a5316k.zip
http://adcdownload.apple.com/ios/ios...__10a5316k.zip
http://adcdownload.apple.com/ios/ios...__10a5316k.zip
http://adcdownload.apple.com/ios/ios...__10a5316k.zip
http://adcdownload.apple.com/ios/ios...__10a5316k.dmg