Haven't had a chance to investigate/confirm that it is the case-sensitive option, but as a general note, it isn't supported at the moment, and turning it on is not a good idea.
Microsoft recently threw this option into Windows as part of their still-changing and latest attempt to make Windows and Linux play better together, but they've added it after 30 years of all Windows software assuming that filesystems (other than things like FTP sites) are case-insensitive. Turning it on is going to confuse the vast majority of Windows software.
Both DO and this new Windows-feature are very useful. Do you have any plans to support the case-sensitive behavior of Windows? I'm working with a GIT repo where "somebody" added case-sensitive files so this Win2004-feature saved my day. Example: Foo.bar; foo.bar; foo.Bar.