Updated code for the heart of current Linux products was released Friday, in the first major revamp to the kernel since November. Linus Torvalds and the main Linux developers issued the update to the latest stable version of the 2.4-series Linux kernel. The release, version 2.4.21, adds support in the open-source operating system for a host of new devices and corrects software flaws. It also incorporates support for Advanced Micro Devices' 64-bit Opteron processor. Read more: CNet News.