Following yesterday's Android 4.1 Jelly Bean announcement, Google has updated its SDK Tools and Android Development Tools (ADT) plugins for the Eclipse SDK. The ADT 20.0 plugin includes new Holo-themed application templates, which should make it easier for developers to adhere Android's style guide. A new device monitor has been added as well, placing multiple debugging tools into one consolidated application. There are many more new features, bigfixes, and performance tweaks in Google's new ADT and SDK 20.0 revision, but if you're not a developer, tread lightly — most of these new features are rather technical.