Via tokyohive: BoA is gearing up for her December comeback, and fans are psyched to hear new Japanese material after such a long hiatus. A radio station recently played her new song, "Milestone", and it's promising to be a big hit, thanks to its pretty melody and BoA's rich vocals. It seems that during her time away, she developed a rich tint to her tone that speaks to her growth as an artist. We definitely can't wait for the full release, but until then, check out this radio rip below: BoA's new single will be released on December 7th. Stay tuned�for more updates! [ Thank you to everyone who sent in this tip! ]