The Hollywood hardman admits he's piled on the pounds since he first played maverick cop John McClane 18 years ago and is determined not to embarrass himself with a flabby physique on screen.
He says, "I need to get in shape, I need to work out.
"There is a high chance it will be out next summer--we're in the final stages of getting it all together."
The movie's plot had to be rewritten after last year's Hurricane Katrina tragedy--the original screenplay involved an oil tanker explosion that sends huge waves flooding into New Orleans, Louisiana.
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