Ok, so I've been sending emails to Gensler and Manchester trying to get the heights. Someone from Manchester came back yesterday with info from Gensler. The heights are:
595 feet to the spire.
456 feet to the "crown" - this should be the top of the mechanical penthouse.
It's listed as 37 floors, but in reality there are only 36 actual occupied floors. The reason for the discrepancy is it's tradition in the hotel industry to skip the 13th floor. So they go from 12 straight to 14.
It will also have 4 levels underground for parking. She said is breaks ground in November.
She said the design is complete, but that a different architecture firm is handling the skybridge to the convention center.