Much like the update from the iPhone 4 to the 4S, the 2013 LS, Lexus’s flagship sedan, is not an all-new model. Generally, when a manufacturer says a model has 3000 new parts, you should know you are getting more of the same. So much so that the model names of the previous generation, (LS460, LS 460 L and LS 600 hl) have been retained. This is not to say there haven’t been some changes. There are quite many of them.