[webkit-help] Does Safari 5.1 use WebKit2?

[Daniel R. Schneider]

Is now Safari 5.1 on Lion or Snow Leopard actually using WebKit2? If yes, has WebKit2.framework simply renamed to WebKit.framework for Safari 5.1? I could only find WebKit.framework in /System/Library/Frameworks/, even after the update. 

Can you recognize from the version information displayed by http://www.webkit.org/misc/WebKitDetect.html if Safari is using WebKit or WebKit2? 

Thanks for clarification! 
Daniel