A proposed fourth Pirates of the Caribbean movie has a title—P of C: On Stranger Tides—and a vague release date—summer 2011—but there's also a lot of questions about whether it'll actually get made.

For one thing, Johnny Depp told the Los Angeles Times that his enthusiasm for a fourth outing as Captain Jack Sparrow had waned now that his longtime Disney ally, former chairman Dick Cook, has been booted out.

Bill Nighy

Now comes word from Bill Nighy—that's the squid-faced Davy Jones to you lot—says that any announcement about a sequel is premature.

"I understand that there was an announcement that there was going to be a fourth, and now I've been told since that that was not a reliable announcement," Nighy told a group of reporters last week while promoting the animated film Astro Boy.

A fourth movie depends a lot on whether Depp signs on, and it would behoove new Disney studio chair Rich Ross to make him happy.

The series' producer, Jerry Bruckheimer, meanwhile, has been serious enough about a fourth film to approach director Rob Marshall (Chicago) to take over from Gore Verbinski, who directed the previous three installments.

But Nighy doesn't think Bruckheimer's in any hurry, either. "Jerry at one point said we have to wait until the world is pirate-hungry again," Nighy said. "I think I'm getting a taste in my mouth."

Still, Nighy's not writing a fourth installment off. "I'm pretty sure that there will be [a fourth]," Nighy said. "I would be amazed if there weren't, given the success of the first three."

As for whether Davy Jones will make an appearance if a fourth movie moves ahead? "I would love to be in it, because I had a wonderful time with those," Nighy said. "They were great people, and those films are beloved, so it would be great to be in a fourth one."

Nighy is just holding out for some cool Davy Jones-themed merch. "This time maybe they'll make some pajamas," he said.