The Linux 3.9-rc6 kernel was released over the night. With Linus expecting next week's 3.9-rc7 kernel to be the last test release, the final release of the Linux 3.9 kernel
is expected in about two weeks time.
The 3.9-rc6 kernel is characterized by "mostly boring" work over the past week wit hlots of small fixes and a couple of reverts. There isn't anything too particularly exciting, as Linus confirms within his mailing list announcement
For those not briefed on what's coming to this next Linux kernel release, read Top Features For The Linux 3.9 Kernel
and Features You Won't Find In The Linux 3.9 Kernel