Series 3 Soundtrack is out on November 5th!
Proof: http://www.gallifreyone.com/forum/showthread.php?t=150267 and http://www.play.com/Music/CD/4-/3497142/Doctor-Who-Original-Music-from-Series-Three/Product.html

And also...! So much for doing the series 3 action cue (as some people call it now) or anything towards the end of Gridlock! Because....! *is super-duper excited*

http://www.gallifreyone.com/forum/showthread.php?t=150168
And in case you're not on the forum, this is copy-pasted:
"I highly suggest Murray Gold fans head over to the >Mill's< site. Click on TV and Film from the left hand side. This should take you to a page with the withered doctor at the top. You now need to click on "View on BEAM TV" which can be found on the rich hand side. This will open up a QuickTime player which will show (mostly) doctor who and torchwood clips (amongst other mille productions) over which plays a fantastic series 3 medley track!!!!"

I've also ripped the audio from that video: here.
It's mostly clean, which is awesome, except for that part where the Doctor speaks. (Why did they put that in!) But I've also done a very quick bit of a reconstruction of that part! It's obviously not very good - I really am no expert at these things, but it'll suffice, I hope. Here.