Linux kernel 3.1 out
Linux 3.1 <a href="http://lkml.org/lkml/2011/10/24/212">has been released</a>. The changes include support for the OpenRISC opensource CPU, performance improvements to the writeback throttling, some speedups in the slab allocator, a new iSCSI implementation, support for Near-Field Communication chips used to enable mobile payments, bad block management in the generic software RAID layer, a new "cpupowerutils" userspace utility for power management, filesystem barriers enabled by default in Ext3, Wii Controller support and new drivers and many small improvements. Here's the <a href="http://kernelnewbies.org/Linux_3.1#preview">full changelog</a>.
Read <a href="http://www.h-online.com/open/features/What-s-new-in-Linux-3-1-1347364.ht... to know what's new.