Renaissance ROM is far more than just the Crystal - it includes the refurbished China, Japan and Korea galleries in the heritage west wing, and the Canadian Indian gallery in the heritage east wing, which all opened in December 2005. Around the same time, the new galleries of Ancient Cyprus and the Bronze Age Aegean opened on the third floor of the west wing. Since then, the Sigmund Samuel gallery of Canadiana has opened on the refurbished ground floor of the east wing, with the new Minerals and Gems gallery directly above it on the second floor.
Other heritage wing galleries that will open as part of Renaissance ROM are: Earth and Early Life on the second floor of the east wing ( which will link through to the Dinosaurs in the Crystal ); the new 20th Century Design gallery and the Byzantium gallery ( they'll go directly above the Schad gallery ); and galleries of Rome and Nubia on the third floor of the west wing.
I was told several years ago that there are plans to renovate the second floor of the west wing with more natural history exhibits ( whale skeletons etc. ) ... which I assume would be possible at the south end, now that the Schad gallery of Biodiversity has opened.
Once the 1984 Terrace Galleries ( which blocked the space between the east and west wings without joining them ) were demolished and the Crystal was built the Museum finally achieved its original goal of a cross-wing that linked the east and west heritage wings at the north end of the site.
Thus, on the second floor, Birdies ( west wing ) now leads into Mammals and Dinosaurs ( Crystal ) ... which will in turn lead into Early Life ( east wing ) - with the Schad gallery further linking the east and west wings in the Museum's midsection. And, on the third floor, Egypt ( west wing ) now leads into Middle East, South Asia, Africa the Americas and Asia-Pacific ( Crystal ) which in turn is linked to the European galleries ( east wing ). ROM visitors will eventually be able to do a circuit of the building through the combined heritage wings and the Crystal, and the Museum will be able to present its treasures in a more logical way than before.