"Other" section of storage up to 5gig now.

[iPwnza]

Why? What is it for??

 

[Dragule]

Basically, It's temporary files, and some app datas.
I believe that the installation files stay on the phone when you uninstall an app.

Currently, the only way to clean the Other section is to reset the phone

For more information, you can read this whole thread, where we are having a discussion about this issue. We tried plenty of things, but we don't know what it contains exactly.
>> http://forums.windowscentral.com/windows-phone-8/210460-what-about-other-storage-section.html