The Free Software Foundation have recently published an whitepaper containing guidelines for Free Software Operating systems regarding secure boot. The guidelines explains what secure boot means in detail and also covers the approaches taken by Ubuntu and Fedora to overcome it. The recommendations can be viewed here.
Secureboot has always been a concern of Linux distributions as it means people will not be able to run and install GNU/Linux operating systems on their computers those who have secure boot enabled. To overcome this issue, Fedora has decided to purchase keys signed by VerSign that will make the computer recognizable to its operating system and will enable users to run it. All Fedora releases will come with this key and henceforth there will not be a problem in installing Fedora on secureboot enabled machines.
The problem is more or less Fedora and other distros who want to purchase this key will have to depend on Microsoft to some extent for purchasing this key. As a result the Free Software Foundation, concerned about this issue has published a set of recommendations for GNU/Linux distros to follow.
FSF is continuing to buld public support and awareness regarding this issue, asking people not to buy any computers with Restricted Boot. They are also addressing the issue with Microsoft regarding Restricted Boot on ARM devices like smartphones and tablets that will stop Linux distros from booting in them. Also they are collaborating with different hardware manufactures to make user instructions regarding secure boot.