One of the tracks from Dunkirk, Supermarine, was unveiled earlier today and I was wondering if anybody's found it yet?

Yep, I have.

Any chance you could upload it?

It's on Youtube. Use Firefox, but 128 is probably the best bitrate you'll get for now.

You can get it in 192 by using JDownloader.

I searched for some albums myself today and I even found what you're looking for.

Here's the link: http://uploaded.net/file/j2g75fz6/Hans_Zimmer_-_Supermarine_from_Dunkirk_2017_FLAC.rar

For those who prefer MP3: Thread 217743

Its also available on Spotify.