Content on the SD Cards is treated as local storage without hacks or Libraries. Xbox Music found all of my music, Photos the same, etc..
That is good news. The hack always worked for me, but it is a lot better to get official support. I started to use Mediamonkey because Xbox music couldn't find my music, so I think I will give Xbox music another try.
As for the 50:50 split I am sure apps will have been sorted by the full release. This is the feature I been looking forward to most (for RT) and I still can't try it out. No download for UK yet :cry: