ThinkSecret reported that it expects new versions of Apple's Shake, Final Cut Pro and DVD Studio Pro at the National Association of Broadcasters Conference which takes place between April 16-21 in Las Vegas, NV.
Also possible are references to a new pro video and new pro audio application to be introduced.
Meanwhile, an unconfirmed MacRumors tipster points to possible PowerMac updates to come at NAB from Apple. PowerMacs were last updated in June 2004.