The chart performance of Shake It Off is surprisingly good, they just don't want Taylor to compete with herself. So even disappointed with NO new song, but still a good thing.
SIO was released a month ago, I think it's too fast for new song
We first heard White Horse like 2 weeks after Love Story came out. On Grey's Anatomy.
And Innocent September 12th at the VMAs when Speak Now the album came out the same week that 1989's coming out.