The latest stable version of the Linux kernel is: 2.4.19 The latest prepatch for the stable Linux kernel tree is: 2.4.20-pre7 +The latest beta version of the Linux kernel is: 2.5.37 The latest prepatch for the beta Linux kernel tree is: 2.5.8-pre3 The latest 2.2 version of the Linux kernel is: 2.2.22 The latest prepatch for the 2.2 Linux kernel tree is: 2.2.22-rc3