Joe Hill mentioned in an interview that King was downright giddy about 'It' for six months up until the release, like he'd always bring it up in conversations with people. And he'd do stuff like putting red balloons in his house at home or Pennywise signs on his front lawn. So you could tell he was genuinely excited.

Conversely his promo for DT was in contrast fairly tepid PR stuff. Given that DT is arguably his most important work, I kind of have to wonder if his actual feelings for the film were positive.