There was some speculation that Disney might go in another direction, but it looks like "Pirates 3" will definitely arrive with its screenwriters’ choice of titles: "Pirates of the Caribbean: At Worlds End." (No apostrophe.)
Screenwriters Ted Elliott & Terry Rossio ("Shrek," "National Treasure") have their very own website (Wordplayer.com, which focuses on screenwriting, obviously), and it’s there that the good news was announced.
That’s pretty much all I got, news-wise. Far as I’m concerned, "Worlds End" can’t get here quickly enough.