Hmm, looks like they changed the original stage, the 15% climb is still in, but many of the route has been changed to what was planned before.
On the CN main site, the old profile is still there, but on the main site of Tirreno itself, it's this:
Still hard, but not as hard as the previous one. Although Sasso Tetto is hard
On the CN main site, the old profile is still there, but on the main site of Tirreno itself, it's this:

Still hard, but not as hard as the previous one. Although Sasso Tetto is hard