However, the external optical drive did not support reading/writing Blu-ray discs.

This format is used by some versions of Blu-ray discs.

A Blu-ray disc was also planned but never released due to a production error.

It is the only seventh generation console that can use Blu-ray discs.

The film was released to Blu-ray disc on January 28, 2008.

In early 2008, the war was decided when several studios and distributors shifted to Blu-ray disc.

Backups can also be made to Blu-ray disc if the appropriate software is installed.

"But it's not without drawbacks, including a total inability to play Blu-ray discs."

The "total inability to play Blu-ray discs" bit of this headline is false.

A Blu-ray disc of the film was also released in April 2011, though no extras were included.