The Safari 4 Beta was released today. This upgrade to Safari is rather extensive. Bringing in many of the features of Google Chrome and Firefox as well as many other new features.
Personally I am the most excited about the addition of CSS3 support. CSS3 is an amazing upgrade from CSS2, and one of my favorite parts of the upgrade is that CSS3 will include font support. Giving web designers / developers many more options in their cross platform designs. Check out Safari 4’s new features here. From there you can also download the beta for either MAC or Windows.