From Fedora Project Wiki
Warning - Beat Converted
Large filesystems
Fedora 17 will support file systems larger than 16 terabytes on the default file system (ext4). With the latest version of e2fsprogs, ext4 file systems can now be up to 100 TB.
Encrypted filesystems
Fedora 17 uses version 1.4.1 of the cryptsetup package, which removes deprecated API calls. In addittion, it supports placing LUKS headers on separate devices and the creation of shared, non-overlapping encrypted segments on a single device.