She didn't say whether she was working on songs for Disclosure's new album Caracal, due out on September 25, or her own new record, which she's reportedly been working on with Joel Little at the same Kingsland studio where she recorded Pure Heroine.
Seeing as Disclosure have already confirmed the release date, guest artist list and several single for their new album, it's unlikely they're still prepping new songs for that.
Lorde performed with Disclosure at last year's Brit Awards, where they mixed Lorde's Royal's and Disclosure's White Noise together.