What is the best way to update ionic from one beta version to the other, what I did was only to change the package.json from "2.0.0-beta.8" to "2.0.0-beta.10"
The layout of the app now looks horrible =(
beta.10 has changed the page structure and styles got a little messed up, you have to review your styles again.
In the other hand, detailed instructions to update your app are in the CHANGELOG 
You need to do it release by release.
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