I really don't know if you remind about this collaboration, it's a news old of tons of months but luckily it seems this news is true and the song will be released soon, this is what I found in the web:

There are news about Bill's collaboration with another artist. According to Cherrytree Records the song will be released this spring and it will be on the other artist's album. It's still unknown which Cherrytree artist has worked with Bill. You can read parts from the Cherrytree Records-Chat in the picture above...

What do you think? Which artist could be for you?