Google Earth 4 is officially released! The beta program began 6 months ago, and now almost exactly 1 year after GE 3 was released, GE 4 is no longer in beta (latest version is 4.0.2722). See the Google Earth home page for details, or just go download GE 4 now. GE 4 has many new features not available in the earlier version. Many of the features have been described in this blog over the past few months. Here are some highlights and why you should definitely consider upgrading.