[revs]

5.5 is Version 5 but using WebKit instead of the highly modified WebKit Omni used to use.

By usign the standard WebKit it means things are a lot faster, and Omni can upgrade WebKit to the newest version a lot lot easier and faster than when they used a customised version.

5.5, feature wise, should be the same as 5. Version 5.6 --> 6 is where new features are to be expected.