There are several newly posted interior images on the Waterside facebook page -
http://www.facebook.com/pages/RBC-Waterside-Centre/108681372508949?sk=photos
This image (below) from 9-13-2012 seems to show how part of the original facade is being tied into the new concrete structure with metal fasteners, which will be embedded in the soon to be poured concrete floor.
(source:
http://www.facebook.com/media/set/?set=a.444553632255053.99546.108681372508949&type=3 )