We have covered Ksplice earlier, when it debuted around a year back during this time. Ksplice is a breakthrough technology in Linux as it eliminates the need to reboot a Linux system. Most of the time, reboots are necessary as in case of kernel updates. However, Ksplice eliminates the need for any reboot as it can apply all kernel patches in live.
Ksplice blog announces this by saying,
In response to many requests, Ksplice is proud to announce we’re now providing Uptrack free of charge for Fedora!
Fedora will join Ubuntu Desktop among our free platforms, and will give Fedora users reboot less updates as long as Fedora maintains each major kernel release.
However, of note: Fedora is the only Linux distribution that migrates to a new Linux kernel version family (e.g. 2.6.33 to 2.6.34) during the lifetime of the product. This kernel version family migration is such a major version change that Ksplice recommends a reboot for this version change. These migrations occur roughly twice per year and only in Fedora; all of the other important Fedora kernel updates can be applied bootlessly, as can the kernel updates for the rest of our supported Linux distributions.
Fedora has recently decided to provide Ksplice update to its users for free. This feature is already available on Ubuntu for free whereas Red Hat, Centos, Debian, Ubuntu Server and CloudLinux provide this feature on a nominal fee. Free or not, this is one service every Linux user should have and Fedora users are very excited to have this feature.