User blog comment:J Fan/Latest News: POTC 5 production!/@comment-25267670-20150217060119/@comment-1984959-20150218035335

Pintel and Ragetti are yet to be confirmed or debunked to appear in P5. But as far as we know, the actors were at least called for availability...not to mention the characters were considered for P4. See this blog for more information.

I believe Christoph Waltz has come and gone in terms of P5 reports. And according to the official synopsis, Javier Bardem's character is "Captain Salazar", who we don't know much about (officially, anyway).