President Joe Biden, former President Barack Obama, and Bill and Hillary Clinton are all tentatively slated to speak at the Democratic National Convention next week, sources familiar said.

The working speaking schedule, which can always change, is as follows, according to the sources:

Monday: President Joe Biden, former Secretary of State Hillary Clinton
Tuesday: Former President Barack Obama
Wednesday: Vice presidential nominee Tim Walz, former President Bill Clinton
Thursday: Vice President Kamala Harris

-ABC News' MaryAlice Parks and Fritz Farrow

Trump posted on X for the first time in nearly a year ahead of his conversation with Elon Musk scheduled for Monday night.

The video posted is a previously released campaign ad referencing his multiple indictments and telling supporters, "They are not coming after me, they are coming after you."

The last time Trump posted on X was Aug. 24, 2023. It was a picture of his mugshot from Fulton County, when he turned himself in to authorities following his election interference indictment in Georgia.

-ABC News' Lalee Ibssa, Kelsey Walsh, Soorin Kim

Trump, in a post to his conservative social media site Truth Social, announced he will be interviewed live by Musk on X at 8 p.m. ET.

It will mark a major return for Trump to X, formerly known as Twitter, since he was banned from the site following the Jan. 6, 2021, attack on the U.S. Capitol. Trump was reinstated in late 2022 but declined to become active on the site again, despite boasting 88 million followers.

Musk endorsed Trump following the July 13 assassination attempt against the former president. Recently, Musk has amplified misinformation about voting and elections on his X feed.

In a video posted on his X account, the Minnesota governor discussed what he called "not a normal week" since being named as Harris' running mate.

Walz confirmed some details reported previously by ABC News and others, including that he informed Harris' vetting team that he had not used a teleprompter before.

"Not a normal week, which is a good thing. Started by missing a call from the Vice President, pretty important one. And then got that call and honored to join the ticket with Kamala Harris to take us in a great direction," Walz said.

"After that, it has been a whirlwind. We got on a plane and we flew to Philly, and they told me that in an hour I'd be giving a speech and there would be a teleprompter, something I had never used in my life, so certainly terrified, but was lifted up by the folks in Philly."

-ABC News' Will McDuffie