Actually, they did introduce new high end cameras at NAB 2013. The G30, XA20 and XA25.
In NAB 2014 they have a workshop called "Canon Small Chip Sensor Workshop". The abstract for that session is "Discover how to create and deliver near instant video production in the field and in the studio with the XA20, XA25, and Vixia Mini X. Learn how to take advantage of their incredible image quality and superb Wi-Fi capabilities, and see what's new for 2014 within the Canon small chip sensor camera line". The bolded bit implies that they will be talking about 2014 cameras that have not been released yet. Granted, those will not be EOS cameras, but to say they will have nothing for NAB this year probably is not true.