IMO, she hasn't really done nothing big or special music-wise for her 10th anniversary. I feel that she's been feeding us recycled stuff and not really putting effort into giving us decent stuff anymore. :Lately, she's just being touring, going overseas, touring, promoting cameras and underwear. =/ Not really fitting or putting must time into her music. A Complete is just an excuse to not release a new album for her 10th anniversary. This so-called Green song sounds okay but I'm not going to expect it to be something amazing tho.
As for the rumors stuff, they just do it to give us more suspense...and to sucker some of you.

I don't mind the rumors of a single but as long as it's cool title and not something lame like that.