If you're the sort of Linux user who won't even wait for a packaged distribution to update, you'll be happy to hear that Linux 3.7 has hit the servers. The updated foundation puts ARM chips on a footing much closer to that of their x86 counterparts: the code now supports a true multi-platform model that will load on multiple ARM designs. It's also the first instance of Linux to natively support 64-bit memory for newer ARM-based hardware. No matter what circuitry you're running, there's also a big boost to security by allowing signed kernel modules that will only accept approved code, even if a curious user gains root access. There are many (many, many) more tweaks and tune-ups in store, so those who like to push their OS limits can check release details from Linus Torvalds and developers at the source links.