John Travolta: Costars Are Helping Me Heal

See touching photos of John Travolta and his son

"[Director] Tony [Scott], Denzel [Washington], Luis [Guzman], John [Turturro], James [Gandolfini] and Sony Pictures stepped up without hesitation to help promote this wonderful film, and their unselfish efforts have allowed my family the additional time to reconcile our loss," he writes.

See Us' photo tribute to stars who have gone too soon

Travolta added that his villainous role -- which he calls "the ultimate evil -- "gave me the chance to dispense with all moral and ethical limitations, and explore just how bad this character could really be. I believe you will
like the result."

Before signing off, he tells fans to set their calendars for opening day, June 12. "I promise you," Travolta writes, "you won't be disappointed."

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Travolta skipped last week's premiere, but costar Washington told Us the actor and his wife Kelly Preston "are doing as well as one can expect."

"It's a tough situation," he told Us.

Jett Travolta died unexpectedly after a seizure in the Bahamas while the family was vacationing in January.