2009-04-24: e2fsprogs version 1.41.5 has been released.
2009-03-14: openSuSE 11.2 will use Ext4 as a file system. It will probably even be the default one.
2008-12-24: Linux 2.6.28 was released, including the first stable version of Ext4.
2008-10-13: e2fsprogs version 1.41.3 has been released.
2008-09-01: e2fsprogs version 1.41.1 has been released.
2008-08-20: The 2.6.26-ext4-7 patchset has been released. People who are using ext4 wih 2.6.26 should really take this patch.