Be more than mobile, reach every Windows screen
Reach millions of players across phone, PC, and Xbox One
The Internet of your things
You can browse animation samples
the Metro style samples library.
You can watch animation with metro style apps in the following URLs
Metro style animation with XAML
Metro style animation with HTML5
Good luck :)
I wrote a blog post about WinRT transitions here:
They are an interesting new addition to the WinRT XAML framework and make it easy to create fluid animations.