Linux kernel version 2.4.15 has been released and it is available from Kernel.org and its mirrors. Patch here, Changelog here, while the development, unstable, 2.5 source tree opened by Linus Torvalds. Update: A serious bug has been discovered on both 2.4.15 & 2.5 kernels and it can corrupt your filesystem. Please use an older version of the kernel until 2.4.16 comes out. Update 2: Linux kernel 2.4.16 has been released. Patch here, source here.