Yes, it says that the height will be 634. Then gives some long explanation on why 634 is a significant number (it's easy to remember
IF it is approved, they will proceed with the new height.
Tokyo Sky Tree Facility
Maximum height of 634m, with antenna. The first observation deck at 350m, the second observatory at 450m.
Will include Broadcasting facilities, shops, restaurants, etc.
Completion set for late 2011, with a Spring 2012 opening.