In an interview with Rolling Stone Magazine, Mick Jagger talked about recording with The Rolling Stones again. He said, “I don’t know when we’re gonna get together at the moment. We don’t know when we’re going to get together and record. It’s got to be in safe circumstances and all that stuff.”

Jagger is currently isolated in the English countryside and said that this gives him time to finish what they’ve already recorded. He described it as “pretty varied. A bit of all kinds of different kinds of music in there.”
In the interview, he also said that he and Led Zeppelin’s Jimmy Page can’t agree on where the Stones’ new track, “Scarlet” was recorded. Page remembers it to be at Ronnie Wood’s basement studio and Jagger thought it to be at Olympic Studio in London.
The previously unreleased track, which is featured on the band’s new expanded edition of their Goats Head Soup album, was released last month.

TL;DR:

• Mick Jagger says that for the Stones to record, it’s got to be “in safe circumstances.”
• Jagger is currently isolated in the English countryside and said that this gives him time to finish what they’ve already recorded.