This mobile-first link dump gets you almost all the places it's available: Stream from Apple Music, Spotify, Amazon Music, YouTube Music, Pandora, Deezer, Tidal. If you like to keep the music you buy, and prefer to give a little more direct support, you can purchase a downloadable copy from iTunes Music, and 24-bit audio downloads are available at Qobuz and HDtracks.
Keep in mind: There is likely more to come. Over at Echoing the Sound, cdm noted that clips posted to Instagram feature different artwork - and track titles that aren't on Challengers [MIXED] - so with any luck, we'll see another, more full release in the coming weeks.