Howto? install with ext4 ?

[hanasaki]

how can I install the newest version coming out this fall 2008 with ext4?
How can I convert my existing system to ext4?

how ready is ext4 for "primetime" and production?

[chronniff]

Not sure about installing with ext4...but I do know that once you change a filesystem to ext4 you can't revert back to ext3....but you can change from ext3 to ext4

[HavocXphere]

how ready is ext4 for "primetime" and production?
As I understand it, its not quite ready for everyday use & production environment yet.