For the past few weeks, it's been one Dune casting announcement after another: Stellan Skarsgard, Oscar Isaac, Zendaya, Javier Bardem, all joining the already-cast Dave Bautista, Charlotte Rampling, Timothee Chalamet, and Rebecca Ferguson. One can't help but be reminded of the casting announcements for Marvel's Avengers: Infinity War, where - after a certain point - it would've been easier to list the current Hollywood players who weren't going to appear in the film.
Today brings yet another update: according to Variety, Josh Brolin has signed on to appear in Denis Villeneuve's Dune, where he'll be playing "Gurney Halleck, the warmaster for Chalamet’s family and a mentor to his character." Patrick Stewart played this role in David Lynch's 1984 version of the film, but the difference between that version of Halleck and Halleck's portrayal in the novel (where he's more of a poet warrior-type) leaves much room for a new take on the character.
Brolin probably needs no introduction to the BMD crowd, but it's worth pointing out that this'll be his second time to work with Villeneuve, after 2015's Sicario. Most recently, he appeared as the swaggering Cable in Deadpool 2, and will next reprise his role as the villainous Thanos in this summer's Avengers: Endgame (where we're hoping he gets his ass stomped, that asshole).
Nothing further to report at this time, but rest assured that we've probably got more than a few Dune casting announcements to get through before the film begins production. Stay tuned for those as they become available.