According to an article in the Hollywood Reporter (via TV Predictions), Warner is planning to restore a number of classic films in "4k resolution".
Films will include Blade Runner, Bonnie and Clyde, Cool Hand Luke, Sudden Impact and Magnum Force.
Chris Cookson, president of Warner Bros Technical Operations, told the Hollywood Reporter, "When you are doing restoration, you want to re-create a new element to support the title for years to come. It is critical that you retain as much of the original information that the filmmaker created as possible. Unless you are willing to work at 4k, it is inevitable that you will lose a great deal of the information that was created and included in the (original) finished film."
There's no word yet on when restored films will be available on HD DVD or Blu-ray.
Mmmmm BladeRunner