DayZ, but he's talked with both Sony and Microsoft about the PS4 and Xbox One, too. Nothing's set in stone, but Hall "absolutely" likes Sony's approach to indies; he's turned off by Microsoft's ban on self-publishing and history of charging thousands for game updates.
"Sony lets you self-publish and they don't make you pay for updates," Hall told Eurogamer. "Microsoft requires you to have a publisher. They have no digital distribution strategy and they require you to pay $10,000, or whatever it is, for updates."
Hall mentioned potential console releases for DayZ back in April, and said he'd already met with Sony in particular. Sony was "obviously interested," Hall said, though he didn't mention next-gen at the time.
Last week Hall said that once the PC version is good to go, a PS4 iteration is "definitely" something he'd look at. "But we have to do the PC version first," he said. "Once we get the alpha out, that's a good time for us to run it up on a [PS4] dev kit and see what happens."
Hall isn't counting Xbox One completely out, but he still has some unanswered questions about developing for Microsoft's console: "I like what I saw on the Xbox in a lot of cases as well. I'm not shitting on them. I'm kind of hopeful that Microsoft has just forgot to talk about its indie support. Maybe I'm being a bit naive."
Last we heard, the DayZ alpha was scheduled for June (that's this month) at the earliest.