The Linux 3.0-rc6 kernel isn't too exciting since we're nearing an end to the development cycle, but this release does introduce the new Intel ISCSI driver. This is the driver that's received praise by Christoph Hellwig and others. There also continues to be various Intel and Radeon DRM bug-fixes.
The Linux 3.0 final kernel is expected to be released soon.
Read more on LKML.org.