Given it a few more listens, thank you to those that recorded it!
My initial reaction wasn't as strong as Heavyweight - that song gave me chills, made the hair on my neck stand up and nearly (nearly!) brought a tear to my eye.
This didn't quite do it, but I love the intro, really got me into it. I really like it, got lots of energy, like AFAYC, and the lyrics seem to fit better? I always felt AFAYC and even TEIWWB (which I actually love, interesting to hear people not liking it) had lyrics that were too long and awkward to get into the timing? (Does that make any sense? I don't know much about music technical terms at all)
This'll definitely go on the iPod and get more listens

It sounds like they've been toying with a few ideas from what I've heard of the interview - I wonder if they'll play more new stuff than just this at the festivals!
Thanks again everybody! Would not have been able to get a hold of it without this forum, appreciate it a lot!

Cheers
Matthew