Sunís ZFS was the first 21st century file system (see ZFS: threat or menace? for a detailed overview) that focused on data integrity and operational simplicity. ReFS steals several pages from the ZFS playbook.
Donít get too excited though: like most major FS introductions, this one is server only, and wonít, initially, support booting. Think of it as an extended beta that, after a year+ of baking, will come to the rest of us.