Linus has released the 3.10 kernel. "In the bigger picture (ie since 3.9) this release has been pretty typical and not particularly prone to problems, despite my waffling about the exact release date. As usual, the bulk patch-wise is all drivers (pretty much exactly two thirds), while the rest is evenly split between arch updates and 'misc'. No major new subsystems this time around, although there are individual new features." Some of those new features include a number of Ftrace enhancements, the memory pressure notification mechanism, tickless operation, ARM multi-cluster power management support (part of the big.LITTLE solution), the bcache block caching layer, and much more. See the (still in-construction) KernelNewbies 3.10 pagefor lots of details.