Linux 2.6.33 has been released on February 24th, 2010.

Summary: This version features Nouveau (a reverse-engineered driver for Nvidia graphic cards), Nintendo Wii and Gamecube support, DRDB (Distributed Replicated Block Device), a security extension for TCP called "cookie transactions", a syscall for batching recvmsg() calls, several new perf subcommands (perf probe, perf bench, perf kmem, perf diff), support for cache compression, Xen PV-on-HVM support, drivers for virtual network and graphic cards from VMWare, swappable KSM pages, and many new drivers and many small improvements and bugfixes

http://kernelnewbies.org/Linux_2_6_33

Some nice improvements

I've been using 2.6.33 in Slackware and with newer versions of X, I'm getting great FPS on an ATi Radeon HD4850 by using the OpenSource drivers over the official ATi Drivers.

Really?, my experiences with an 4670 on Linux has been terrible flickering videos are not nice suppose its better then the freezing I've had before.