Samsung has made a big move in order to give users the option to choose which apps they want to install on his devices. The latest flagships of Samsung will become with pre-instaled apps, some of Samsung and Google obviously, but some from Microsoft too, as part of a deal between Samsung and Microsoft. Users in the new Galaxy S6 and S6 Edge will be able to remove some of those apps if they want to.
From XDA forum we can see some screenshots that shows apps from Microsft like OneDrive, OneNote and Skype can be deleted. Even S Voice of S Health, native apps from Samsung, can be deleted too.