It's just a rumour for now since YG or SM hasn't released an announcement about it. But the site looks legit. What do you think? Will try to get more info on this :)
So it's an APRIL FOOL'S joke from xamfm.com...
PS: I looked at the website and Big Bang's Lollipop 2 is #1 on their charts. XAMFM is an Asian radio station and they also feature Jpop artists.