Personally I like the other tracklist better. The Dome one is nice, but the one in Kokuritsu is just EPIC!!
About the rumours...mhm, I don't really bother with such things. I mean, their private lives are really none of our business. I hate it, when people just make up stories and this new Nino-dating-Sasaki-thing is also nothing more than a rumour.
Believe me, if it's true than I'm very happy for him. I want him/them to be happy and find true love.
But there are also other fans - crazy people - out there, who could go berserk after reading things like this in a tabloid.