Uncharted 4: A Thief's End is getting a franchise-first single-player expansion. But if you're hoping to learn more about this, you should get comfortable.

During a livestream event today, a Naughty Dog developer said "it will be a while" before the developer talks specifics about the untitled expansion.

Naughty Dog pointed out that production on the single-player content didn't even begin until Uncharted 4 was released in May. As such, it's going to be a while before the developer discusses the content and eventually releases it.

Players can expect to learn more "as soon as we're able to give you more info," Naughty Dog said.

Back in September 2015, Naughty Dog's Arne Meyer said about Uncharted 4's single-player DLC was inspired by The Last of Us expansion Left Behind. "It worked really well for us for The Last of Us," he said. "We thought we could put together a really great piece of content as well [for Uncharted 4]."

Two months later, in November 2015, Naughty Dog stressed that it was early days for Uncharted 4's single-player add-on. The developer said it had "no idea" what it was going to do for the expansion.

Left Behind was Naughty Dog's first-ever single-player expansion. Things went well, as it was praised by critics across the board, and even earned the Game of the Month award from GameSpot for February 2014.

Though you'll have to wait a while for Uncharted 4's single-player expansion, the game will receive its first multiplayer add-on, Lost Treasures, tomorrow. Check out this post for a roundup of everything we know about it. Also coming out tomorrow is a major patch, 1.08, that makes a series of balance and gameplay changes; full patch notes are coming tomorrow.

Also during the livestream, Naughty Dog reiterated that it would like to add split-screen multiplayer some day. However, this is a "really tough" feature that the developer "can't promise" will ever be released. "But it's been on our mind," the developer said.

Back in May, Naughty Dog said the same thing, explaining that it wants to deliver the feature but some "hurdles and obstacles" need to be overcome first.