Linus Torvalds宣布3.12稳定版内核，带来很多驱动更新和改进，比如Radeon显卡，AMD APU，高通枭龙/Adreno，NVIDIA Optimus，各种文件系统和其他驱动等更新。
Linus在邮件列表中说：“我本来在犹豫要不要来个RC8，不过下周要出去旅游，网络不好，还是不延迟了”。并表示3.19后就会进入4.0时代，不过那是一年后的事情了。
该版新特性：
The Radeon open-source kernel graphics driver has improved Dynamic Power Management, but it won’t be until Linux 3.13 where Radeon DPM is enabled by default along with HDMI audio.
A brand new DRM/KMS driver in the form of the Snapdragon MSM driver written by Rob Clark to go along with his reverse-engineered Freedreno driver for Qualcomm Snapdragon/Adreno graphics.
Run-time GPU power management so NVIDIA Optimus systems can dynamically power on/off the secondary GPU.
Experimental DRM render nodes support done by David Herrmann over the summer.
AMD Berlin APU support as the first APU built upon AMD’s Heterogeneous System Architecture (HSA).
The EXT4 file-system now supports aggressive extent caching and better recovery capabilities.
Random F2FS, XFS, and Btrfs file-system improvements. This kernel does deliver on disk improvements.
zRAM has been promoted out of the staging area of the kernel. ZRAM supports a compressed block device in RAM to avoid paging to disk and is mostly of benefit for systems with limited amounts of system memory.
Various staging driver updates and sound driver work and other glorious work.
Ubuntu系可以这里下载安装升级：