DX is dead, it died with Mime Joker and was solidified as dead the moment Batman Returns Batman/Bruce Wayne became a regular MMS set.
They're not going to go all out for Leto Joker, just look at their recent 20 releases in the past year. Most of them are barebones with little effort. I remember when we all made lists of what we'd like to see for the "Ultimate" Ledger and Nicholson Joker from them. Guess what, most of those never came to be. Instead what they did was hold certain versions or accessories or upgrades over the span of a couple of releases. We never got the Nicholson Mob/Gangster Joker and Ledger Joker never even got an RPG or lead pipe. It took 4 releases to finally get no brainers like the knife in the shoe or regular flesh hands to have a proper interrogation look. Then they ended their Joker streak with a lame, odd choice like Mime Joker (so many better versions they could have done) and a rehashed/repainted Bank Joker. They didn't end either character on a high note in terms of releases for a character that pretty much spawned "deluxe" releases and put them on the map.
Hot Toys wants you to buy as many different releases as they can, it's more profitable that way. That's why they don't sell head sculpts individually or costumes and weapons. Hell, we rarely get two headsculpt sunless it's some bonus pack thing or a repainted Batman or Captain America. With Leto Joker, it wouldn't surprise me if they release a barebones, shirtless Joker with just the tats on him and a couple of hands and a weapon or two. Think Drax or BvS Superman or Black Panther. Then later we'll see a bunch of the other looks like their other popular character selections.