It looks like occasional popstar Rita Ora is returning to music via a collaboration with dance producer/DJ/ridiculous-headpiece-wearer Marshmello.
The damning evidence is outlined below (that's his 'signature hat'):
https://www.instagram.com/p/BTAgnXRA-T3/?taken-by=ritaora&hl=en
Marshmello recently collaborated with Noah Cyrus, while Rita recently collaborated with every major brand on the planet. An album is expected from the latter at some point this year but who knows really.