It took longer than Linux creator Linus Torvalds would have liked, but the latest Linux kernel, version 2.6.21, has arrived. It brings many minor and major changes in how Linux handles process scheduling and time.
In his April 25th release note to the LKML (Linux Kernel Mailing List), Torvalds wrote, "If the goal for 2.6.20 was to be a stable release (and it was), the goal for 2.6.21 is to have just survived the big timer-related changes and some of the other surprises."
Surviving all those changes took time. "Its been over two and a half months, and while its certainly not the longest release cycle ever, it still dragged out a bit longer than Id have hoped for and it should have."