Yes as the title says the Song for the upcoming has been revealed.
IF YOU DON'T WANT TO KNOW UNTIL AN OFFICIAL RELEASE DON'T SCROLL
Surprisingly this game's intro will not be a Supercell song. I personally did expect a supercell song as its been like tradition since the series beginning (excluding of course the Project Mirai series). But then again supercell hasn't released anything vocaloid related in a while.
Instead the reigns have been passed to Livetune. LIvetune has had some great songs so far my favorite is Tell Your World. A well worthy person for the honor of the theme creator.
Ok enough talking here it is. The song is called "Decorator" and is set to be released in single form on 2014/03/05. That's one day before the game's release. I have high hopes for this song as I love everything supercell has came out with. Who can forget that breath-taking performance of Odds & Ends at Magical Mirai. That was moving and I nearly cried. And if you know me I don't cry often.
Also for those who think I'm plucking this out my arse here have a link where i got the info.