Complex sentence: With the release of the Creative Suite 3, ImageReady was officially been discontinued, and many thought that the reason for this was that, since Adobe now owns Fireworks, they don't need ImageReady, and will continue to develop Fireworks instead.
Split into simpler sentences: With the release of the Creative Suite 3, ImageReady was officially discontinued. Many thought that the reason for this was that, since Adobe now owns Fireworks, they don't need ImageReady, and will continue to develop Fireworks instead.