Anatole and Miriam are in Australia, and they're now updating their new travel weblog, Don't Shake the Koala Tree.
I've linked to in the sidebar as "Anatole & Miriam."
Apparently, the new $100 bill was unveiled on January 28th; it'll go into circulation on March 17th.
The Bank of Canada's website describes the imagery on the back as follows:
A map of Canada created by Samuel de Champlain in 1632* is paired with a birchbark canoe. There is a satellite image of the country and depictions of Radarsat-1 (a satellite) and a telecommunications antenna. An excerpt from Miriam Waddington's poem, "Jacques Cartier in Toronto," and its French translation by Christine Klein-Lataud, summarizes humanity's eternal quest for discovery.
Update: This page explains the bill's security (anti-counterfeiting) features.