Hi
http://www.channelregister.co.uk/2009/10/20/fedora_12_beta_1_review/
"Fedora has never been shy when it comes to adopting new features.
Fedora 11, for example, was one of the first major distros to adopt the
ext4 files system. But with Fedora 12 the focus is much more on feature
refinement and improving the stability and functionality of some
features introduced in Fedora 11."
Rahul