Another expected update today was Safari, and right on schedule 5.1 is now available. The new features include Reading List (similar to the venerable Instapaper) and multi-touch gestures beyond what was previously supported (earlier versions of Safari supported two-finger swipes to go forward and back when traversing web pages).
There's also full-screen browsing like that found in many other Lion apps, better search, a downloads popover, Resume (also found in Lion apps), and some welcome privacy and features like Private Autofill.
You can download Safari 5.1 here. You will need Snow Leopard 10.6.8 or newer.
