After Sony has announced some time ago that the PlayStation 4 will feature AMD accelerated processor units (APUs), wild speculations came up about which operation system will run on the new console. Sony put an end to those speculations.
According to recent reports, the console will run an open source operating system which is based on FreeBSD 9.0. Grub is employed for booting the console. Thereby, Sony opts for BSD and against Linux. A reason for this decision has not been mentioned yet, though experts suppose that the decision is up to the easier licensing of FreeBSD 9.0.
Whether the PlayStation 4 is able to run with different operation systems, is still unknown. According to Sony, the PS4 will be available in Germany at the end of the year, even though a precise date of release has not yet been mentioned.