Takeaway #1
New version should have faster browsing and better navigation and searching. Java script engine called "nitro" will run 4.2 times faster than previously, claimed to be faster than IE 7 and FireFox 3.Takeaway #2
Other new features include "cover flow" to browse history, and "smart address field", which is same tech as firefox's "smart location "awesome bar".Takeaway #3
Safari 4 is in beta for Mac and PC and require OSX 10.5.6 or 10.4.11 for Apple, and XP service pack 2 or Vista for windows.
Takeaway #4
Along with Nitro, safari 4 also supports HTML 5 and CSS 3 and also have passed the Acid3 test.Takeaway #5
Other visual changes; tabs to very top of window, add tab with "+", windows native look for windows users, full page zoom.
