Don't listen to MacOSRumors.
Why didn't they happen to mention iWrite before it was posted on other rumor sites? Because they make up information based on current rumors.
Remember rumors of iTunes 5? The next few days, they posted "We've seen beta's of iTunes 5..."
Remember rumors of VPC 7? The next day, they posted "We've seen an early alpha of VPC 7..."
it's all made up.