Joanna Cassidy re-shooting scenes

It seems like they have been re-shooting scenes with Joanna Cassidy (Zhora) for the upcomming DVD release of Blade Runner.. Cool news indeed, I wonder what purpose the scenes have, will they be fitted in the movie ?. Whom knows, check out Joanna Cassidy Official Website for upcomming news and details.
From Joanna Cassidy Official Website

Joanna has just finished re-shooting her scenes from the original BLADE RUNNER movie. Joanna is wearing her original outfit (which she kept over from the first production). These new scenes will be part
of the upcoming special BLADE RUNNER DVD re-release. Check back for more details.

Source: The newsgroup & Joanna Cassidy Official Website