Red Hat wants to be ready for a world of ARM-powered PCs, and it just took a big step toward that goal by releasing Fedora 20 Heisenbug. The Linux distribution now supports ARM as a main platform; users and developers no longer have to use Intel-based chips if they want Red Hat's full blessing. The OS also brings much-improved virtualization through both a new visual interface and "first-class" virtual machine images. There are updates to desktop environments like GNOME and KDE, too. Whether you're setting up an ARM server or just appreciate Red Hat's nod to Breaking Bad, you'll find full details of the Heisenbug upgrade at the source links.