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It does highlight the current status of the device though which may be useful at times. When you select Developer Mode or Sideload Apps, you get a verification prompt that asks you to confirm the selection. The new method improves the implementation on Windows 8.x significantly and should make life a lot easier for developers, for instance by requiring no registration to get started or registering phones. The main difference between the options is that "sideload apps" is limited to loading apps from sources other than Windows Store, while developer mode goes beyond sideloading applications.
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