I don’t know about any new routes, but your guide will have these 2 older bouldering areas, which are around Chatswood/Epping.
Lindfield Rocks: behind the tennis courts on the corner of Tryon and Archbold Rds, Lindfield
very popular, 100m long 8m high bouldering, mostly vertical
West Lindfield: Lane Cove National Park (SW of Blaxland Rd)
http://www.sydneyclimbing.com/xgo_west_lindfield.html
2 smaller areas, very overhanging – dry in rainy weather. Another area is 500m SE along the bushwalking path.
(Indoor: http://www.climbfit.com.au/, near St. Leonards station)