Apparently Canon is holding a press event on April 23, 2013. Rumor is they will announce the EOS-70D camera then. The recently announced EOS Rebel SL-1/100D camera may share the same sensor with the EOS-70D. You can read my latest post on the EOS-70D and see Canon's official release of the EOS Rebel SL-1 camera here.
Official invitation to the press and trade should be going out very soon. The recently announced Nikon D7100 is available in camera stores now and a friend of mine bought one and is quite impressed by its performance and value. Canon needs to answer the challenge quickly with the release of the EOS-70D very soon.