The Linux 2.6.32-rc4 kernel
was released merely four days ago, but as planned, the Linux 2.6.32-rc5 kernel is now available. This release candidate that just accumulates four days worth of patches is coming due to the annual Linux kernel summit that is coming up and will take Linus Torvalds and other key kernel developers away for a few days. Most of the changes though in Linux 2.6.32-rc5 come down to driver changes, with the addition of two new network drivers (stmmac and vmxnet3) and then various other updates.
The Linux 2.6.32-rc5 kernel release announcement can be read at LKML.org