From Grzegorz Tos via Facebook:
Bit of heads up for those heading into Echo Canyon this spring. Since the last print of Bow Valley Sport guide book a lot has happened in the canyon. To avoid confusion look through all the updates on TABVAR page for walls that you are interested in. From what I can tell all guys involved have been good at posting updates here. Some sectors have more than twice as many routes as in the guide book. Example is The Balcony. Attached is a nice topo put together by Bonar McCallum.